Copyright 2020 CAC/BDP Corp.
D
3300 Riverwood Parkway Atlanta GA, 30339
Edition Date: 12/20 Catalog No. OM-DHMVHA-01
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Replaces: NEW
Table 3 — Troubleshooting
*Diagnostic lights are a combination of lights that illuminate in the display area on the unit. They are a combination of the lights seen during normal
operation.
PROBLEM
POSSIBLE CAUSE
SOLUTION
Unit/System Does Not Work
•
The circuit breaker has tripped or a fuse
has blown.
•
Power failure.
•
Diagnostic lights illuminate.
*
•
Voltage is too low.
•
Reset the circuit breaker or replace the fuse with
the specified replacement fuse.
•
Restart operation when the power is restored.
•
Call your service representative.
•
Call your service representative.
Cooling is Not Working Properly
•
The filter is blocked with dust.
•
Temperature is not set properly.
•
A window or door is open.
•
The outdoor unit is obstructed.
•
The fan speed is too low.
•
The operation mode is in
FAN
instead of
COOL
.
•
Clean the air filter.
•
Check the temperature and reset if necessary.
•
Ensure all doors and windows are closed while
operating the unit.
•
Remove the obstruction.
•
Change the fan speed selection.
•
Change the operating mode to
COOL
or reset
the unit.
Heating is Not Working Properly
•
The filter is blocked with dust.
•
Temperature is set too low.
•
A window or door is open.
•
The outdoor unit is obstructed.
•
Clean the air filter.
•
Check the temperature and reset if necessary.
•
Ensure all doors and windows are closed while
operating the unit.
•
Remove the obstruction.
Unit Stops During Operation
•
The Off timer is not operating correctly.
•
Diagnostic lights illuminate.*
•
Restart the operating mode.
•
Call your service representative.