GD Midea Refrigerant Equipment Co. Ltd Service manual for E1 Window
10
Air filter
Clean or replace if restricted.
Vent. door
Close if open.
Unit undersized
Determine if the unit is properly sized for the area to be
cooled or heated.
Condenser and
Evaporator
Clean or replace if restricted.
Fan motor
Check the fan capacitor and replace if not /-10% of
manufactures rating.
Room structure
Take proper measures to make the door and windows
sealed well if gap is found.
Air flow
Clean or remove if any barrier is found to block the
inlet/outlet wind flow of the unit.
Sunlight
Add a awning if the condenser is exposed to the sunlight.
Less refrigerant
Check the tubes for reasons of leakage. Recycle the
refrigerant, correct the leakage points and recharge.
Capillary tube
Regulate the flow if capillary tube and make the evaporating
temperature appropriate if the evaporator is frosted. Replace
if blocked. Repair joint if leaking.
Compressor
The inlet and outlet valve of the compressor is damaged,
making the low pressure connected with the high pressure.
The refrigerating system can not produce high pressure and
low pressure. Replace the compressor after checking for the
reason.
Heat sources
Reduce if too many.
reverse valve
The seal in valve is damaged, making the low pressure
connected with the high pressure. The refrigerating system
can not produce high pressure and low pressure. Replace
the reverse valve after checking for the reason.
Insufficient
cooling or
heating.
Drainage
The drainage is blocked. It will increase the efficiency in
cooling mode, but will cause the condenser to frost in heating
mode.
Refrigerant
The amount of the refrigerant is too much, making the
compressor load too big. Recycle and recharge the
refrigerant after checking for the reason.
Stop instantly
after startup.
Compressor
The compressor is seized. Replace after checking for the
reason.
No power
Check the voltage. Call an electrician if no within the limit.
Wiring
Check the terminals. Repair and correct if loose.
Temperature setting
Check and adjust the thermostat.
Main switch setting
Check and adjust the main switch setting.
Reverse valve wire
Check the resistance of reverse valve wire. Replace the wire
if short, open or damaged.
No cooling or
heating.
Reverse valve
If the reverse valve is blocked, the heating mode will not
perform. Replace the reverse valve after checking the
reason.
