Fan Motor Can't Operate; Compressor Can't Operate - Gree ETAC2-07HC230VA-A Service Manual

Tube temperature protection
Protection of temperature limiter
Malfunction of temperature limiter
Thermal fuse is burnt out

4.Fan Motor Can't Operate

Possible Causes
Wrong wire connection, or poor
connection
Connection needle stand between
main board and display board is
loose
Fan capacitor is damaged
Power voltage is a little low or
high
Motor of outdoor unit is damaged

5.Compressor Can't Operate

Possible Causes
Wrong wire connection, or poor
connection
Compressor relay on main board
is damaged or needle stand of
compressor is loose
Capacitor of compressor is
damaged
Power voltage is low or high
Coil of compressor is burnt out
Cylinder of compressor is blocked Compressor can't operate
44
When ambient temperature is high, the detected
temperature by indoor tube temperature sensor
is high. The detected temperature by temperature
sensor at air outlet is also high
Check whether the air inlet is blocked by curtains,
clothes, etc.
When turning on the unit, the heating effect
is poor. Use universal meter to measure the
two contact points of temperature limiter. If the
resistance value is too big, the temperature limiter
is damaged
When turning on the unit, the heating effect
is poor. Use universal meter to measure the
two contact points of temperature limiter. If the
resistance value is too big, the temperature limiter
is damaged
Discriminating Method (Air conditioner Status)
Check the wiring status according to circuit
diagram
Check whether the needle stand is loose
1. Discharge the capacitor at first, and then use
universal meter to measure the resistance of fan
capacitor. It displays 0 or very small
2. If the resistance is very big, measure the
voltage at both ends of capacitor. If the voltage
at both ends of capacitor is same with the power
input voltage, the fan capacitor is damaged
Use universal meter to measure the power supply
voltage. The voltage is a little high or low
When unit is on, cooling/heating performance
is bad and ODU compressor generates a lot of
noise and heat.
Discriminating Method (Air conditioner Status)
Check the wiring status according to circuit
diagram
Check whether relay can operate normally under
cooling status
1. Discharge the capacitor at first, and then use
universal meter to measure the resistance of fan
capacitor. It displays 0 or very small
2. If the resistance is very big, measure the
voltage at both ends of capacitor. If the voltage
at both ends of capacitor is same with the power
input voltage, the fan capacitor is damaged
After turning on the unit, poor cooling effect or the
compressor is turned on or turned off frequently.
Use universal meter to measure the power
voltage
Use universal meter to measure the resistance
between compressor terminals and it's 0
Increase the set fan speed. When indoor tube
temperature decreases to a certain value, it will
resume automatically.
Clean the filter. Move curtains, clothes and other
obstacles.
Replace the temperature limiter.
Replace the thermal fuse.
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
firmly.
Insert the needle stand tightly.
Replace fan capacitor.
Suggest to equip with voltage regulator .
Change compressor oil and refrigerant. If no
better, replace the compressor with a new one.
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
firmly.
Replace the main board with the same model.
Replace the capacitor of compressor.
The fluctuation of the rate voltage is 10%. If the
voltage is low or high, please equip with voltage
regulator.
Repair or replace compressor.
Repair or replace compressor.
Installation and Maintenance
Service Manual