Carrier 38GVM Series, Service Manual, Page: 29 / 70

29
TROUBLESHOOTING CONTINUED
Basic Troubleshooting
PROBLEM POSSIBLE CAUSE SOLUTION
Indoor unit emits a bad odor on
start--up

Air filter dirty

Output air still has odor after cleaning filter.

Clean the air filter

Contact your service representative.
You hear water flowing noise
when the unit is running

This is normal and is the refrigerant flowing
through the system.

No maintenance required
Indoor unit produces a mist
when the air conditioner is
running

This is normal cooling and is caused by high
humidity and temperature in the room.

No maintenance required. Mist should stop as
room is cooled down and the humidity is removed.
Wireless remote control does
not work

Batteries are dead.

Unit needs to be reset.

See battery replacement section in this manual
and replace batteries.

Turn off power to indoor unit. Remove plug from
wall and then reinsert plug. Restart unit.
Water leaks into room from
Indoor unit

Condensing water has overflowed

Check indoor condensing drain or call your
representative.
Unit/System Does Not Work

To protect the unit upon an immediate restart
after a stop, the system controller will delay
the unit for 3 minutes before allowing the unit
to start back up.

The circuit breaker has tripped or a fuse
has blown.

Power failure.

Error codes displayed

Voltage is too low.

After turning unit off, wait at least 3 minutes before
trying to restart.

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.

Close the window or door.

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.

Close the window or door.

Remove the obstruction.
Unit Stops During Operation

The Off timer is not operating correctly.

Error codes displayed

Restart the operating mode.

Call your service representative.