Heat Controller BHD-651-G Manuel D’Utilisation
Heat Controller, Inc.
Portable Dehumidifier with R-410A
BHD-G Service Manual
14
Complaint
Cause
Remedy
Fan motor noise
Fan
Replace the fan if cracked, out of balance, or partially
missing.
Blower
Replace the blower if cracked, out of balance, or partially
missing.
Loose screws
Tighten them.
Worn bearings
Replace the motor if knocking sounds continues when
running, or if the motor hums or noise appears to be internal
while running.
Compressor fan motor runs
only
Voltage
Check voltage. Call an electrician if not within limits.
Wiring
Check the wire connections, if loose, repair or replace
the terminal. If wires are off, refer to wiring diagram for
identification, and replace. Check wire locations. If not per
wiring diagram, correct.
Main PCB failure
Replace the main PCB.
Capacitor (Discharge
capacitor before testing)
Check the capacitor. Replace if not within 10% of
manufacturer’s rating. Replace if shorted, open, or damaged.
Humidity sensor
Replace if shorted, open, or damaged.
Compressor
Check the compressor for open circuit or ground. If open or
grounded, replace the compressor.
Insufficient capacity
Air filter
Clean if restricted.
Condenser and
Evaporator
Clean if restricted.
Fan motor
Check the fan capacitor and replace if not within 10% of
manufacturer’s rating.
Room structure
Ensure that the room the unit is operating in is sealed well.
Close any open doors or windows.
Air flow
Clean or remove any barrier that blocks the inlet/outlet air
flow of the unit.
Less refrigerant
Check the lines for leakage. Recycle the refrigerant, correct
the leakage points and recharge.
Capillary tube
Regulate the flow of capillary tube and make the evaporating
temperature appropriate if the evaporator is frosted.
Compressor
The inlet and outlet valve of the compressor is damaged,
making the low pressure connected with the high pressure.
The refrigerating system is difficult to produce high pressure
and low pressure. Replace the compressor after checking
for the failure.
The compressor does not stop
even if the room humidity has
reached the set RH%.
Humidity sensor
Check and replace if the Humidity sensor, if open or
damaged.
Main PCB
Check and replace the main PCB
The unit starts and stops
frequently.
Power supply
The input power supply voltage is too low. Call an electrician
if not within limits.
Humidity sensor
Check and replace if the Humidity sensor, if open or
damaged.
Main PCB
Check and replace the main PCB.