GD Midea Refrigerant Equipment Co. Ltd Service manual for F Dehumidifier
6
3.1.6 Complaint and remedy
Complaint Cause
Remedy
Transformer
(Discharge transformer
before testing)
Check resistance between the two input/output lines on
transformer. Replace the transformer if either of the input/output
is open or the transformer is damaged.
No display on
panel or any one of
the button failure.
Display board or main
PCB failure
Replace the display board if it is +5V else replace the main
PCB.
No power
Check voltage at electrical outlet. Correct if none.
Power supply cord
Check voltage at the power cord terminal on Main PCB.
Replace the power cord if none.
Transformer
(Discharge transformer
before testing)
Check resistance between the two input/output lines on
transformer. Replace the transformer if either of the input/output
is open or the transformer is damaged.
Wire disconnected or
connection loose
Connect w ire. Refer to wiring diagram for terminal
identification. Loose. Repair or replace loss e terminal.
Main PCB failure
Select fan speed and Check the voltage of P1, P2 on main
PCB. Replace the main PCB if no voltage.
Capacitor (Discharge
capacitor before testing)
Test capacitor . Replace if not within 10% of manufacture's
rating. replace if shorted, open or damaged
Fan motor w ill
not run.
Will not rotate
Fan blade hitting shroud or blower hitting scroll. Realign
assembly. Check fan motor bearings. Replace the motor if motor
shaft don't rotate.
Check voltage. Call an electrician if not with in limits.
Test capacitor . Replace if not within 10% of manufacture's
rating. Replace if shorted, open or damaged.
Check bearings. Replace the motor if the fan blade can't
rotate freely.
Fan motor runs
intermittently
Revolves on over
load.
Pay attention to any change from high speed to low speed.
Replace the motor if the speed does not change.
Fan
Replace the fan if cracked, out of balance, or partially
missing.
Blower
Replace the blower if cracked, out of balance, or partially
missing.
Fan motor
noise
Loose screws
Tighten them.
