Daikin

Setting Indoor Group Address

Indoor Group Address is required for proper CoolMasterNet operation. Without Group Address Indoor unit is not visible and can not be controlled by CoolMasterNet. 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
  

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

• 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:

Daikin Self-diagnostic Malfunction (Error) Codes

I n d o o r U n i t	Malfunction Code	Problem Description	Supposed Causes	Models
				RA	Sky Air	VRV	Pac kage	HRV	Chil ler	Fan Coil
	A0	External protection device activated	External protection device connected to the terminal strip T1-T2 of indoor unit is activated		V	V	V
	A1	Malfunction of indoor unit PCB	Defective indoor unit PCB External factor (Noise etc.)	V	V	V	V	V	V
	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
	A4	Malfunction of freezing protection	Shortage of water volume Low water temperature setting Defective water temperature thermistor	V	V	V	V		V	V
	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
	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
	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
	A8	Malfunction of power supply or AC input overcurrent	Defective power supply voltage Defective connection on signal line Defective wiring		V	V		V
	A9	Malfunction of electronic expansion valve	Defective electronic expansion valve coil Defective indoor unit PCB Defective relay cables		V	V	V	V	V
	AA	Heater overheat	26WH is activated				V		V
	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
	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
	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
	С1	Failure of transmission (between indoor unit PCB and sub PCB)	Defective connection of the connector between indoor unit PCB		V	V
	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
	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
	C6	Malfunction of fan motor sensor or fan control driver	Defective fan PCB Defective connection of capacity setting adaptor Field setting error		V	V
	C7	Front panel driving motor fault	Defective front panel driving motor Defective limit switch	V
	C9	Malfunction of suction air thermistor	Defective thermistor for suction air Defective indoor unit PCB Defective connector contact	V	V	V	V	V		V
	CA	Malfunction of discharge air thermistor	Defective thermistor for discharge air Defective indoor unit PCB Defective connector contact	V		V	V	V
	CC	Malfunction of humidity sensor system	Defective humidity sensor Defective connector contact	V	V		V
	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
	H5	Malfunction of compressor motor overload thermistor	Defect of compressor motor overload thermistor Defective connector contact	V					V
	H6	Malfunction of position detection sensor	Faulty contact of compress or cable Defective compressor Defective outdoor unit PCB	V			V		V
	H7	Malfunction of outdoor unit fan motor signal
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