R410A50Hz Universal Outdoor Series Technical Manual Duct Type Indoor Unit
90
GD Chigo Heating & Ventilation Equipment Co., Ltd.
9.1
Main control board
1
15.3
scroll case(right)
1
9.2
transformer
1
16
up panel assembly
1
14.Troubleshooting
Table 1
Symptoms
Causes
Solution
Unit does not start
Power failure
Power switch is off
Fuse of power switch may have burned
Batteries of remote controller exhausted or other
problem of controller
Wait for the comeback of power
Switch on the power
Repilocation
Replace the batterises or check the
controller
Air flowing normally
but conpletely can’t
cooling
Temperature is not set correctlly
Be in 3 minutes protection of compressor
Set the temperature properly
Wait
Units start or stop
frequently
Refrigerant i s too little or too much
Air or no concreting gas in the refrigerating circuit
Compressor i s malfunction
Voltage is too high or too low
System circuit is bolcked
Check leakage ,and rightly recharge
refrigerant
Vacuum and recharge refrigerant
Mainternance or change compressor
Install manostat
Find reasons and solution
Low cooling effect
Outdoor unit and indoor unit heat exchanger is dirty
The air filter is dirty
Inlet/Outlet of indoor/outdoor units is blocked
Doors and windows are open
Sunlight directly shine
Too much heat resource
Outdoor temp. Is too high
Leakage of refrigerant or lack of refrigerant
Clean the heat exchanger
Clean the air filter
Eliminate all dirties and make air smooth
Close doors and windows
Make curtains in order to shelter form
sunshine
Reduce heat source
AC cooling capacity reduces(normal)
Check leakage and rightly recharge
refrigerant
Low heating effect
Outdoor temperature is lower than 7
℃
Door and windows not completelty closed
Leakage of refrigerant or lack of refrigerant
Use heating decvice
Close doors and windows
Check leakage and rightly recharge
refrigerant
