BHD-G Service Manual
Portable Dehumidifier with R-410A
Heat Controller, Inc.
13
6.3.5 Abnormal noise
6.3.6 Complaint and remedy
Complaint
Cause
Remedy
No display or any button
failure.
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.
Display board or main
PCB failure.
Replace the display board if it is +5V or else replace the
main PCB.
Fan motor will not run.
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 no voltage.
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
Reconnect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose 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 manufacturer’s
rating. Replace if shorted, open or damaged.
Will not rotate
Fan blade hitting shroud or blower hitting scroll. Realign
assembly. Check fan motor bearings. Replace the motor if
motor shaft does not rotate.
Fan motor runs intermittently
Revolves on over load.
Check voltage. Call an electrician if not with in limits.
Test capacitor. Replace if not within 10% of manufacturer’s
rating. Replace if shorted, open or damaged.
Check bearings. Replace the motor if the fan blade can’t
rotate freely.
Pay attention to any change from high speed to low speed.
Replace the motor if the speed does not change.
Excessive noise
Copper tubing
Remove the cabinet and carefully rearrange tubing not to
contact cabinet, compressor, shroud and/or barrier.
Stops instantly after startup.
Refrigerant
The amount of the refrigerant is too much, making the
compressor load too big. Recycle and recharge the
refrigerant after checking the charge amount.
Compressor
The compressor overheated. Replace.
Check whether the lines
are vibrating or coming
into contact with other
lines or compressor
Check whether the noise
is from inside the line.
