26
ERROR
CODE
MALFUNCTION
OR PROTECTION
FAILURE CAUSE
AND CORRECTIVE ACTION
The DC fan failure
1. Strong wind or typhoon below toward to the fan, to make the fan
running in the opposite direction. Change the unit direction or make
shelter to avoid typhoon below to the fan.
2.fan motor is broken, change a new fan motor.
Main circuit voltage failure
1. Whether the power supply input is in the available range.
2. Power off and power on for several times rapidly in short time.
Remain the unit power off for more than 3 minutes than power on.
3. the circuit defect part of Main control board is defective. Replace
a new Main PCB.
Pressure sensor failure
1. Pressure sensor connector is loosen, reconnect it.
2. Pressure sensor failure. change a new sensor.
The main control board PCB B
EEprom failure
1. The EEprom parameter is error, rewrite the EEprom data.
2. EEprom chip part is broken, change a new EEprom chip part.
3. Main PCB is broken, change a new PCB.
H6 displayed 10 times in 2
hours
Refer to H6
Low pressure protection
(Pe<0.6) occured 3 times in an
hour
Refer to P0
Low pressure protection
1. System is lack of refrigerant volume. Charge the refrigerant in
right volume.
2.When at heating mode or DHW mode, the outdoor heating
exchanger is dirty or something is block on the surface. Clean the
outdoor heating exchanger or remove the obstruction.
3. The water flow is too low in cooling mode.increase the water
flow.
4. Electrical expansion valve locked or winding connector is loosen.
Tap-tap the valve body and plug in/ plug off the connector for
several times to make sure the valve is working correctly.
