Daikin

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Connecting to Daikin VRV System

  • System with single Outdoor Unit


Daikin - 1 gas system 2 outdoors - Wiki.jpg

  • System with multiple Outdoor Units


Daikin - 2 gas systems - Wiki.jpg

Setting Indoor Group Address

Indoor Group Address (centralized address) is required for proper CoolMasterNet operation. Without Group Address Indoor unit is not visible and can not be controlled by CoolMasterNet or any other Daikin equipment. Group Address is set with wired remote controller. Here is a simple sequence of operations for Daikin BRCE61 wired remote controller to set Group Address.

  • Press and hold Cancel button for a few seconds

BRC1E61-buttons.gif

  • Scroll down to Group No. setting function and press Menu/Enter button

BRC1E61-group-address-menu.gif

  • Program Group Address and then press Menu/Enter to save address

Remember if Indoor unit can not see a CoolMasterNet you won't have the Group Address menu option. So make sure the CoolMasterNet is wired to F1 F2 HVAC line and powered.

Reading Thermostat ambient temperature instead of return air

CoolMasterNet will read ambient temperature measured by Thermostat - local wired controller (like BRC1E72) if following field settings had being done on Thermostat:
Setting 10-2 = 03 - Only the thermostat thermistor will be utilized by Indoor unit.
Setting 10-5 = 02 - Room temperature value reported to CoolMasterNet by Indoor is taken from Thermostat

KRP928A2S Auto Mode Control

To enable proper Auto Mode control from CoolMasterNet of the Indoor Unit connected via KRP928A2S adapter, make sure to configure SW3 switch to GLO position:
KRP928A2S-SW3.png

KRP928xxx Limitations

This is taken from original Daikin document "Interface Adaptor for DIII-NET" :

  • The range of temperatures that can be set from the central controller is 18°C to 32°C in cooling and 14°C to 28°C in heating.
  • Fan operation cannot be selected from the central controller or wired remote controller.
  • Group control (i.e., control of multiple indoor units with a single remote controller) is not available.
  • Monitoring is not available of the thermo status, compressor operating status, indoor fan operating status, electric heater, or humidifier operating status.
  • Forced thermo off, filter sign display and reset, fan direction and speed settings, air conditioning fee management, energy savings instructions, low-noise instructions, and demand instructions cannot be made.

Daikin Self-diagnostic Malfunction (Error) Codes

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Malfunction
Code
Problem
Description
Supposed
Causes
Models Cool
Automation
Encoding
RA Sky
Air
VRV Pac
kage
HRV Chil
ler
Fan
Coil
HEX DEC
A0 External protection device activated External protection device connected to the terminal strip T1-T2 of indoor unit is activated V V V 0x10
A1 Malfunction of indoor unit PCB Defective indoor unit PCB
External factor (Noise etc.)
V V V V V V 0x11
A3 Drain Level Control System Abnormality Drain clogging, upward slope, etc
Defective drain pump
Defective float switch or short circuit connector
V V V V V 0x13
A4 Malfunction of freezing protection Shortage of water volume
Low water temperature setting
Defective water temperature thermistor
V V V V V V 0x14
A5 High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short circuit
Defect of indoor unit heat exchanger thermistor
V V V V 0x15
A6 Malfunction of fan motor Broken wires in, short circuit of, or disconnection of connectors from the fan motor harness
Defective fan motor
Defective indoor unit PCB
V V V V V 0x16
A7 Malfunction of swing flap motor Defective swing fl ap motor
Defective indoor unit PCB
Defective connection cable
Defective airflow direction adjusting fl ap-cam
V V 0x17
A8 Malfunction of power supply or AC input overcurrent Defective power supply voltage
Defective connection on signal line
Defective wiring
V V V 0x18
A9 Malfunction of electronic expansion valve Defective electronic expansion valve coil
Defective indoor unit PCB
Defective relay cables
V V V V V 0x19
AA Heater overheat 26WH is activated V V 0x1A
AF Malfunction of a humidifi er system Humidifi er unit (optional accessory) leaking
Defective drain piping (upward slope, etc.)
Defective indoor unit PCB
V V V 0x1F
AH Malfunction of dust collector of air cleaner Defect of dust collecting element
Stained insulator part
Defect of high voltage power supply unit
Defect of indoor unit PCB
V V V V 0x1B
AJ Malfunction of capacity setting(Indoor unit PCB) The capacity setting adaptor was not installed when replacing PCB.
Defective indoor unit PCB
V V V 0x1D
С1 Failure of transmission (between indoor unit PCB and sub PCB) Defective connection of the connector between indoor unit PCB V V 0x21
С4 Malfunction of liquid pipe thermistor for heat exchanger Defective thermistor for liquid pipe
Defective indoor unit PCB
Defective connector contact
V V V V V V V 0x24
C5 Malfunction of gas pipe thermistor for heat exchanger Defective thermistor for gas pipe
Defective indoor unit PCB
Defective connector contact
V V V V V 0x25
C6 Malfunction of fan motor sensor or fan control driver Defective fan PCB
Defective connection of capacity setting adaptor
Field setting error
V V 0x26
C7 Front panel driving motor fault Defective front panel driving motor
Defective limit switch
V 0x27
C9 Malfunction of suction air thermistor Defective thermistor for suction air
Defective indoor unit PCB
Defective connector contact
V V V V V V 0x29
CA Malfunction of discharge air thermistor Defective thermistor for discharge air
Defective indoor unit PCB
Defective connector contact
V V V V 0x2A
CC Malfunction of humidity sensor system Defective humidity sensor
Defective connector contact
V V V 0x2C
CJ Room temperature thermistor in remote controller abnormality Defective room temperature thermistor in remote controller
Defective remote controller PCB
External factor (Noise etc.)
V V V V V 0x2D
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E0 Protection devices activated
(unifi ed)
Protection device connected to outdoor unit PCB actuated
Defective protection device connector contact
V V V 0x30
E1 Defective outdoor unit PCB Defective outdoor unit PCB
Defective connection of inside/ outside relay wires
V V V V V 0x31
E3 Actuation of high pressure switch
(HPS)
Dirty outdoor unit heat exchanger
Defective high pressure switch
Clogged refrigerant piping
Defective connector contact
V V V V 0x33
E3 System No.1
Actuation of high pressure switch
(HPS)
Dirty outdoor unit heat exchanger
Shortage of water volume
Clogged refrigerant piping
Defective connector contact
Defective HPS
V 0xE33
E4 Actuation of low pressure switch
(LPS)
Abnormally drop in low pressure
Defective low pressure sensor
Defective outdoor unit PCB
Defective connector contact
V V V V 0x34
E5 Inverter compressor motor or
overheat
Inverter compressor lock
High differential pressure
Defective inverter PCB
UVW connection error

Defective connector contact

V V V V V 0x35
E6 STD compressor motor
overcurrent/lock
Defective compressor
Defective control PCB
The stop valve is not opened
V V V V 0x36
E6 System No.1 Compressor
overcurrent
Defective electronic expansion valve
Shortage of refrigerant amount
Defective compressor
V 0x36
E7 Malfunction of outdoor unit fan
motor system
Fan motor failure
Neglect to connect or defective connection of harness/
connector between the fan motor and the PCB
Fan does not rotate due to foreign matters caught in it
V V V V V 0x37
E8 Overcurrent of inverter compressor Defective compressor
Defective inverter main circuit capacitor
Defect of outdoor unit PCB
Defect of power transistor
V V 0x38
E9 Malfunction of electronic expansion
valve coil
Disconnection of connectors from electronic expansion valves
Defective electronic expansion valve coil
Defective outdoor unit control PCB
V V V V 0x39
EA Malfunction of four way valve or
cool/heat switchin
Defective four way valve
Shortage of gas
Defective outdoor unit PCB
Defective thermistor
V 0x3A
EC Malfunction of entering water
temperature
Cooling water temperature abnormality
Defective outdoor unit PCB
Defective thermistor
V 0x3C
F3 Malfunction of discharge pipe
temperature
Defective discharge pipe thermistor
Abnormal discharge pipe temperature
Defective outdoor unit control PCB
Defective connector contact
V V V V V 0x53
F6 Abnormal high pressure or
refrigerant overcharged
Refrigerant overcharged
Disconnection of heat exchanger deicer thermistor
Disconnection of outdoor air thermistor
Disconnection of liquid pipe temperature thermistor
Defective outdoor unit PCB
V V V V 0x56
H0 Malfunction of sensor system of
compressor
Harness is disconnected, or defective connection
Defective PCB
V V 0x40
H1 Malfunction of room temperature
sensor or humidifi er unit damper
Defective limit switch
Defective damper
V V 0x41
H3 Malfunction of high pressure switch
(HPS)
Defective high pressure switch
Broken wire
Defective outdoor unit PCB
Defective connector contact
V V V V V 0x43
H4 Malfunction of low pressure switch
(LPS)
Defective low pressure switch
Broken wire
Defective outdoor unit PCB
Defective connector contact
V V V 0x44
H5 Malfunction of compressor motor
overload thermistor
Defect of compressor motor overload thermistor
Defective connector contact
V V 0x45
H6 Malfunction of position detection
sensor
Faulty contact of compress or cable
Defective compressor
Defective outdoor unit PCB
V V V 0x46
H7 Malfunction of outdoor unit fan
motor signal
Abnormal signal from fan motor (Circuit failure)
Disconnection/Short circuit in fan motor leads or
disconnection of connector
Defective inverter PCB
V V V V 0x47
H8 Malfunction of compressor input
(CT) system
Defective power transistor
Defective reactor
Faulty wiring of inverter system
Defective outdoor unit PCB
V V 0x48
H9 Malfunction of outdoor air
thermistor
Defective connection of thermistor
Defective outdoor unit PCB
Defective outdoor air thermistor
V V V V V 0x49
HC Malfunction of (hot) water
temperature thermistor
Defective connection of thermistor
Defective outdoor unit PCB
Defective water temperature thermistor
V V V 0x4C
HF Alarm in thermal storage unit or
storage controller
Thermal storage group defective wiring
Defective setting
Excess of thermal storage tank numbers
V 0x4F
HJ Low water level
Defective switch setting
Water level detecting sensor failure
Defective connector contact
Low water level
Defective switch setting
Water level detecting sensor failure
Defective connector contact
V V V V 0x4D
J1 Malfunction of pressure sensor Defective pressure sensor connector contact
Defective pressure sensor
Defective outdoor unit PCB
V V V 0x61
J2 Malfunction of current sensor of
compressor
Defective current sensor
Defective compressor
Defective outdoor unit PCB
V V V V V 0x62
J3 Malfunction of discharge pipe
thermistor
Defective connection of thermistor
Defective discharge pipe thermistor
Defective outdoor unit PCB
V V V V V 0x63
J4 Malfunction of low pressure
equivalent saturated temperature
sensor system
Defective connection of thermistor
Defective thermistor
Defective outdoor unit PCB
V V 0x64
J5 Malfunction of suction pipe
thermistor
Defective connection of thermistor
Defective suction pipe thermistor
Defective outdoor unit PCB
V V V V 0x65
J6 Malfunction of heat exchanger
thermistor
Defective connection of thermistor
Defective heat exchanger thermistor
Defective outdoor unit PCB
V V V V V 0x66
J7 Malfunction of thermistor
(Refrigerant circuit
Defective connection of thermistor
Defective liquid pipe thermistor
Defective outdoor unit PCB
V V V V 0x67
J8 Malfunction of thermistor
(Refrigerant circuit)
Defective connection of thermistor
Defective liquid pipe thermistor
Defective outdoor unit PCB
V V V V V 0X68
J9 Malfunction of thermistor
(Refrigerant circuit)
Defective connection of thermistor
Defective gas pipe thermistor
Defective outdoor unit PCB
V V V V V 0x69
JA Malfunction of high pressure
sensor
Defective connector contact
Connection of low pressure sensor in mistake for high
pressure sensor
Defective high pressure sensor
Defective outdoor unit PCB
V V V V 0x6A
JC Malfunction of low pressure sensor Defective connector contact
Connection of high pressure sensor in mistake for low
pressure sensor
Defective low pressure sensor
Defective outdoor unit PCB
V V V V 0x6C
JE Malfunction of oil pressure sensor
or sub-tank thermistor
Defective connector contact
Defective sub-tank thermistor
Defective outdoor unit PCB
V 0x6E
JF Malfunction of oil level sensor or
heating heat exchanger thermistor
Defective connector contact
Defective heat exchanger thermistor
Defective outdoor unit PCB
V 0x6F
L0 Malfunction of inverter system Shortage of power supply capacity
Defective power transistor
Defective outdoor unit PCB
V V V V V 0x70
L1 Malfunction of inverter PCB Defective compressor wiring
Defective outdoor unit fan motor
Blown fuse
Defective inverter PCB
V V V V 0x71
L3 El.compo. box temperature rise Fin temperature rise due to short circuit
Defective outdoor unit fan motor
Defective power transistor
Defective outdoor unit PCB
V V V V 0x73
L4 Malfunction of inverter radiation fi n
temperature rise
Fin temperature rise due to short circuit
Defective fi n thermistor
V V V V V 0x74
L5 nverter instantaneous overcurrent
(DC output)
Defective compressor coil (such as wiring disconnection or
insulation failure)
Compressor startup failure (mechanical lock)
Defective inverter PCB
V V V V V 0x75
L6 Inverter instantaneous overcurrent
(AC output)
Overcharge of refrigerant amount
Shortage of power supply capacity
Defective compressor
Defective inverter unit
V V V V V 0x76
L8 Malfunction of overcurrent inverter
compressor
Compressor overloaded
Wiring disconnection in compressor coil
Disconnection of compressor wiring
Defective inverter PCB
V V V V V 0x78
L9 Malfunction of inverter compressor
startup error (Stall prevention)
The stop valve is not opened
Defective compressor
Error in wire connections to compressor
Large differential pressure before compressor startup
Defective inverter PCB
V V V V V 0x79
LA Malfunction of power transistor Defective power transistor
Defective compressor
Defective inverter PCB
V V 0x7A
LC Malfunction of transmission
between control and inverter PCB
Defective connection between the inverter PCB and the
control PCB
External factors (e.g. noise)
Defective inverter compressor
Defective control PCB (transmission block)
V V V V V 0x7C
M1 Malfunction of central remote
controller PCB
Defective central remote controller PCB V V V V V 0xA1
M8 Malfunction of transmission
between optional controllers for
centralized control
Other centralized control power disconnection
Centralized control reset switch ON
Defective transmission wiring
Central remote controller address change
V V V V V 0xA8
MA Improper combination of optional
controllers for centralized control
Improper combination of optional controllers for centralized
control
More than one master controller is connected
Faulty setting of centralized control
Defect of centralized control
V V V V V 0xAA
MC Address duplication, improper
setting
Address duplication of central remote controller V V V V V 0xAC
PO Shortage of refrigerant amount
(thermal storage unit)
Shortage of refrigerant
Clogged refrigerant piping
V V 0x80
P1 Power voltage imbalance or
inverter PCB
Open phase
Interphase voltage imbalance
Defective capacitor in the main circuit
Defective wiring in the main circuit
Defective inverter PCB
0x81
P2 Automatic refrigerant charge operation stop The stop valve is not opened
Closed valve of refrigerant tank
V V V V 0x82
P3 Malfunction of thermistor in switch
box
Defective connection of thermistor
Defective reactor thermistor
Defective inverter PCB
V V V V V 0x83
P4 Malfunction of radiation fi n
temperature sensor
Defective radiation fi n temperature thermistor
Defective inverter PCB
Defective INV. compressor
Defective fan motor
V V V V V 0x84
P8 Heat exchanger freezing protection
during automatic refrigerant
charging
(Close the refrigerant cylinder. Start again from step 1.) V V V 0x88
P9 Malfunction of fan motor
(humidifi er unit)
Defective fan motor
Defective outdoor unit PCB
Broken relay harness
Defective connector contact
V 0x89
P9 Automatic refrigerant charge
operation completed
V V V V 0x89
PA Refrigerant cylinder during
automatic refrigerant charging
Refrigerant cylinder of master unit is empty V V V 0x8A
PA Broken wire of heater
(humidifi er unit)
Defective heater unit
Defective thermistor
Defective outdoor unit PCB
V 0x8A
PC Refrigerant cylinder during
automatic refrigerant charging
Refrigerant cylinder of slave unit 2 is empty V V 0x8C
PE Automatic refrigerant charge
operation nearly completed
V V V 0X8E
PH Refrigerant cylinder during
automatic refrigerant charging
Defective heater unit
Defective connector contact
Defective thermistor
Defective outdoor unit PCB
V V V 0x8B
PJ Malfunction of capacity setting
(Outdoor unit PCB)
Capacity setting adaptor is not installed
Improper capacity setting adaptor
Defective outdoor unit PCB
V 0x8D
PJ Improper combination between
inverter and fan driver
Mis-matching of type of PCB
Improper (or no) fi eld setting after replacing outdoor unit
main PCB
V V V V 0x8D
S
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U0 Shortage of refrigeran Refrigerant shortage and refrigerant clogging
(wrong piping)
Defective thermistor
Defective low pressure sensor
Defective outdoor unit main PCB
V V V V V 0x90
U1 Reverse phase, open phase Power supply reverse phase
T phase open phase
Defective outdoor unit PCB (A1P)
V V V V V V V 0x91
U2 Malfunction of power supply or
instantaneous power failure
Abnormal power supply voltage
Instantaneous power failure
Defective main circuit wiring
V V V V V V 0x92
U3 Check operation not executed or
transmission error
Check operation is not executed. V V V V V V V 0x93
U4 Malfunction of transmission
between indoor and outdoor unit
Short circuit in indoor-outdoor or outdoor-outdoor
transmission wiring (F1 / F2), or wrong wiring
Outdoor unit power supply is OFF

System address does not match Defective indoor unit PCB Defective outdoor unit PCB

V V V V V V V 0x94
U5 Malfunction of transmission
between indoor unit and remote
controller
Transmission error between indoor unit and remote
controller
Connection of 2 main remote controllers (when using 2
remote controllers)
Defective indoor unit PCB
Defective remote
controller PCB
Transmission error caused by noise
V V V V V V 0x95
U6 Malfunction of transmission
between indoor units
Faulty wiring
External factor (Noise etc.)
Defective indoor unit PCB
V V V V 0x96
U7 Malfunction of transmission
between outdoor units or outdoor
storage unit
Connection error of transmission wirings between outdoor
unit and external control adaptor for outdoor unit
Connection error of transmission wirings between outdoor
units
Defective outdoor
unit PCB
V V V V V 0x97
U8 Malfunction of transmission
between remote controllers
Transmission error between main and sub remote
controller
Connection between sub remote controllers
Defective remote controller PCB
V V V V V V 0x98
U9 Malfunction of transmission (other
system)
Transmission error between other indoor and outdoor units
Defective electronic expansion valve of other indoor unit
Defective indoor unit PCB of other indoor unit
Improper connection of
transmission wiring between
indoor and outdoor unit
V V V V V 0x99
UA Defect of indoor/outdoor power
supply
Wrong model connections
Improper power supply
Wrong PCB connected
Defective PCB
V 0x9A
UA Improper combination of indoor
and outdoor units
Excess of connected indoor units
Defective outdoor unit PCB
Mismatch of the refrigerant type of indoor and outdoor unit
Setting of outdoor unit PCB was not carried out after
replacing to
spare PCB
V V V V 0x9A
UA Remote temperature setting wire
disconnection
Remote temperature setting wire disconnection
Defective connector contact
V 0x9A
UC Malfunction of setting of centralized
control equipment address
Address duplication of centralized control equipment
Defective indoor unit PCB
V V V V V V 0x9C
UE Malfunction of transmission
between indoor unit and
centralized control equipment
Transmission error between optional controllers for
centralized control equipment and indoor unit
Connector for setting main controller is disconnected.(or
disconnection of connector for independent / combined
use changeover switch.)
Defective PCB for central remote controller
Defective indoor unit PCB
V V V V V V 0x9E
UF System is not set yet Improper connection of transmission wiring between
indoor-outdoor units and outdoor-outdoor units
Failure to execute check operation
Defective indoor unit PCB
Stop valve is not opened
V V V V 0x9F
UH Malfunction of system Improper connection of transmission wiring between
indoor-outdoor units and outdoor-outdoor units
Defective indoor unit PCB
Defective outdoor unit PCB
V V V 0x9B
UJ Malfunction of transmission
(accessory device)
Defect of accessory devices
Faulty wiring
V V V V V 0x9D
O
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60 External protection device
activated (Heat reclaim ventilator)
Actuation of external protection device
Defective output signal wiring
Defective control PCB
V
64 Malfunction of indoor air thermistor
(Heat reclaim ventilator
Defective connector contact
Defective indoor air thermistor
Defective control PCB
V
65 Malfunction of outdoor air
thermistor (Heat reclaim ventilator)
Defective connector contact
Defective outdoor air thermistor
Defective control PCB
V
6A Malfunction of damper system
(Heat reclaim ventilator)
Defective connector contact
Defective limit switch
Defective damper motor
Defective control PCB
V
70 System No. 2
Compressor overheat
Shortage of refrigerant amount
Defective connector contact
Leakage of four way valve
V
71 System No. 2
Compressor overcurrent
Shortage of refrigerant amount
Short circuit
Defective compressor
V
72 System No. 2
Fan motor overcurrent
Defective fan motor connector contact
Defective fan motor
Defective PCB
V
73 System No. 2
Actuation of high pressure switch
(HPS)
Dirty heat exchanger
Shortage of water volume
Clogged refrigerant piping
Defective connector contact
Defective HPS
V
74 System No. 2
Actuation of low pressure switch
(LPS)
Clogged refrigerant piping
Defective connector contact
Shortage of gas
Defective LPS
V
75 System No. 2
Malfunction of low pressure sensor
Defective connector contact
Defective low pressure sensor
Defective PCB
V
76 System No. 2
Malfunction of high pressure
sensor
Defective connector contact
Defective high pressure sensor
Defective PCB
V
77 System No. 1
Malfunction of fan inter lock
Defective relay contact
Broken wire
V
78 System No. 2
Malfunction of fan inter lock
Defective relay contact
Broken wire
V
7A System No. 2
Malfunction of compressor current
sensor
Defective current sensor
Defective compressor
Defective outdoor unit PCB
V
7C System No. 2
Malfunction of pump inter lock
Cooling water pump interlock actuated V
80 Malfunction of entering water
temperature thermistor
Defective connector contact

Defective entering water temperature thermistor

V
81 Malfunction of leaving water
temperature thermistor or drain
pipe heater
Defective connector contact
Defective leaving water temperature thermistor
V
82 System No. 1
Malfunction of refrigerant
thermisto
Defective connector contact
Defective refrigerant thermistor
V
83 System No. 2
Malfunction of refrigerant
thermistor
Defective connector contact
Defective refrigerant thermistor
V
84 System No. 1
Malfunction of heat exchanger
thermistor
Defective connector contact
Defective heat exchanger thermistor
V
85 System No. 2
Malfunction of heat exchanger
thermistor
Defective connector contact
Defective heat exchanger thermistor
V
86 System No. 1
Malfunction of discharge pipe
thermistor
Defective connecting connector
Defective discharge pipe thermistor
V
88 System No. 2
Malfunction of discharge pipe
temperature
Shortage of gas
Defective discharge pipe thermistor
Defective connector contact
Clogged refrigerant piping
V
89 Malfunction of brazed-plate heat
exchanger freezing
Dirty heat exchanger
Shortage of refrigerant amount
Defective thermistor
V
8A System No. 2
Malfunction of leaving water
temperature thermistor
Defective connector contact
Defective leaving water temperature thermistor
V
8E System No. 1
Malfunction of suction pipe
thermistor 1 for heating
Defective connector contact
Defective suction pipe thermistor
V
8F System No. 1
Malfunction of suction pipe
thermistor 2 for heating
Defective connector contact
Defective suction pipe thermistor
V
8H Abnormal hot water high
temperature
Three way valve malfunction
Defective thermistor
Defect of water temperature setting
V
90 Abnormal chilled water quantity or
abnormal AXP
Shortage of water volume
Disconnection of AXP
V
91 Defective connector contact
Defective electronic expansion valve coil
V
92 System No. 2
Malfunction of suction pipe
thermistor
Defective connector contact
Defective suction pipe thermistor
V
94 Malfunction of transmission
(between heat reclaim ventilator
and fan unit)
Defective fan unit PCB
Defective connecting wire between (1) and (2)
V
95 System No. 1
Malfunction of inverter system
Defective fan inverter unit V
96 System No. 2
Malfunction of inverter system
Defective fan inverter unit V
97 Malfunction of thermal storage unit Defective thermal storage unit V
98 Malfunction of thermal storage
brine pump
Actuation of thermal storage brine pump overcurrent (OC) V
99 Malfunction of thermal storage
brine tank
Low water level of thermal storage brine tank