Carrier 40MPHB, Руководство пользователя, Страница: 15 / 16

40MPHB: Owner’s Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
15
TROUBLESHOOTING (CONT)
Table 3 — Troubleshooting
* 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.
PROBLEM POSSIBLE CAUSE SOLUTION
Unit/System Does Not Work
 The circuit breaker has tripped or a fuse has
blown.
 Diagnostic lights illuminate.
*
 Voltage is too low.
 Reset the circuit breaker or replace the fuse with the
specified replacement fuse.

Call your service representative.
 Call your service representative.
Cooling is Not Working
Properly
 The filter is blocked by 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.
 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.
 Diagnostic lights illuminate.
*
 Restart the operating mode.
 Call your service representative.