Carrier 40GXQ Owner's Manual page 10

Table
1 --Periodic Maintenance
INDOOR UNIT EVERY MONTH
Clean Air Filter* •
Change Remote Control Batteries
OUTDOOR UNIT EVERY MONTH
Clean Outdoor Coil from Outside
Clean Outdoor Coil from Insidel-
Blow Air Over Electric Partsl-
Check Electric Connection Tighteningl-
Clean Fan Wheell
Check Fan Tighteningl
Clean Drain Pans1-
* Increase frequency in dusty zones.
1- Maintenance to be carried out by qualified service personnel. Refer to the Installation Manual
EVERY 6 MONTHS EVERY YEAR
EVERY 6 MONTHS EVERY YEAR
PROBLEM
Unit/System Does Not Work •
Cooling is Not Working
Properly
Heating is Not Working •
Properly •
Unit Stops During Operation •
Table 2--Troubleshooting
POSSIBLE CAUSE
The circuit breaker has tripped or a fuse •
has blown.
Power failure. •
Diagnostic lights illuminate. • •
Voltage is too low. •
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.
The filter is blocked with dust. •
Temperature is set too low. •
A window or door is open. •
The outdoor unit is obstructed. •
The Off timer is not operating correctly. •
Diagnostic lights illuminate. • •
SOLUTION
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.
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.
Clean the air filter.
Check the temperature and reset if necessary.
Close the window or door.
Remove the obstruction.
Restart the operating mode.
Call your service representative.
Diagnostic lights are a combination of lights that will illuminate in the display area on the unit. They are a combination of the lights you see during normal
operation.
Copyright 2009 CAC / BDP • 7310 W. Morris St. • Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 03/09
Manufacturer reserve8 the right to change, at any time, specification8 and design8 without notice and without obligations,
10
Catalog No: OM38-40GX-02
Replaces: OM38-40GX-01