6.Short between the
7.Unit changes over to defrost within 21 sec (depending on
where
8.If either opening or closing temperature does not fall within above ranges or thermostat sticks in 1 position, replace thermostat to ensure proper defrost operation.
CES0130024 DEFROST CONTROL
Some heat pumps built in 1993 and later incorporated a new defrost control similar to the CES0110063 except the
Troubleshooting this control will be the same as the CES0110063 control except for the
CES0130076 DEFROST CONTROL
This defrost control is the same size as the CES0130063 control but is not
Defrost Settings
The defrost control is a time/temperature control which includes a
TABLE 11—DEFROST TIMER SETTINGS
SW1 | SW2 | SW3 |
On | Off | 30 |
Off | On | 60 |
Off | Off | 90 |
On | On | 120 |
To initiate a forced defrost, two options are available, depending on the status of the defrost thermostat.
If defrost thermostat is closed, speedup pins (J1) must be shorted by placing a Flathead screwdriver in between for 5 seconds and releasing, to observe a complete defrost cycle. When the Quiet Shift switch is selected, compressor will be turned off for two,
If defrost thermostat is in open position and speedup pins are shorted (with a Flathead screwdriver) for 5 seconds and released, a short defrost cycle will be observed (actual length is dependent upon the selected Quiet Shift position). When Quiet Shift switch is in ON position, the length of defrost is 1 minute (30 seconds
If it is desirable to observe a complete defrost in warmer weather, the thermostat must be closed as follows.
1.Turn off power to outdoor unit.
2.Disconnect outdoor
3.Restart unit in heating mode, allowing frost to accumulate on outdoor coil.
4.After a few minutes in heating mode,
NOTE: Unit will remain in defrost until defrost thermostat reopens at approximately 80° F coil temperature at liquid line or remainder of defrost cycle time.
5.Turn off power to outdoor unit and reconnect
Compressor Shut Down
This control has the option of shutting down the compressor for 30 seconds while going into and out of defrost modes. This is accomplished by turning DIP switch 3 to the ON position. See Fig. 22 for switch position. Factory default is in the OFF position.
This control has a
Troubleshooting
Troubleshooting this control is done in the same manner as the CES0130063 control with the exceptions listed above.
DEFROST THERMOSTAT LOCATION
On most residential, outdoor
X. FAN MOTORS
Fan motor rotates the fan blade that either draws or blows air through outdoor coil to perform heat exchange. Motors are totally enclosed to increase reliability. This also eliminates need for rain shield. For the correct position of the fan blade assembly, see Fig. 24 and Table 12.
WARNING: Turn off all power to unit before servicing or replacing fan motor. Be sure unit main power switch is turned off. Failure to do so may result in electric shock, death, or injury from rotating fan blade.
The bearings are permanently lubricated; therefore, no oil ports are provided.
For suspected electrical failures, check for loose or faulty electrical connections, or defective
XI. SERVICE ALARM CONTROL BOARD
NOTE: If the proper
The