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Follow service procedures for Failure Codes 18 and 19 when repairing.

FAILURE CODE 25ÐAMBIENT TEMPERATURE SENSOR FAILURE

This Failure Code is set during normal ATC operation. The Failure Code will be set only after the ATC control has been operating for 15 minutes. The control will compensate for the feedback failure immediately upon power up, but the Failure Code will not be set until the time limit has been met.

Failure Code 25 will be stored within the ATC Control, and must be cleared after the failure has been repaired. To clear this Failure Code, refer to Erasing Failure Codes 23 through 28 from ATC Control.

Follow service procedures for Failure Code 11 when repairing.

FAILURE CODE 26ÐIN-CAR TEMPERATURE SENSOR/ASPIRATOR FAILED

This Failure Code is set during normal ATC operation. The Failure Code will be set only after the ATC control has been operating for 15 minutes. The control will compensate for the feedback failure immediately upon power up, but the Failure Code will not be set until the time limit has been met.

Failure Code 26 will be stored within the ATC Control, and must be cleared after the failure has been repaired. To clear this Failure Code, refer to Erasing Failure Codes 23 through 28 from ATC Control.

Follow service procedures for Failure Code 12 when repairing.

FAILURE CODE 27ÐSUN LOAD SENSOR FAILED

This Failure Code is set during normal ATC operation. The Failure Code will be set only after the ATC control has been operating for 15 minutes. The control will compensate for the feedback failure immediately upon power up, but the Failure Code will not be set until the time limit has been met.

Failure Code 27 will be stored within the ATC Control, and must be cleared after the failure has been repaired. To clear this Failure Code, refer to Erasing Failure Codes 23 through 28 from ATC Control.

Follow service procedures for Failure Code 12 when repairing.

HEATING AND AIR CONDITIONING 24 - 71

FAILURE CODE 28ÐWATER TEMPERATURE SENSOR FAILED

This Failure Code is set during normal ATC operation. The Failure Code will be set only after the ATC control has been operating for 15 minutes. The control will compensate for the feedback failure immediately upon power up, but the Failure Code will not be set until the time limit has been met.

Failure Code 28 will be stored within the ATC Control and must be cleared after the failure has been repaired. To clear this Failure Code, refer to Erasing Failure Codes 23 through 28 from ATC Control.

Follow service procedures for Failure Code 10 when repairing.

ERASING FAILURE CODES

Failure Codes 23 through 28 are stored within the ATC in the computer memory. These codes may be erased from the memory after the correct repairs have been made. Intermittent Failure Codes 23 through 28 will be stored until they are erased.

(1)Run the DIAGNOSTIC TEST.

(2)Depress the PANEL button to access all Failure Codes. When the Display begins flashing alternating zeros, you can do three things:

²Do nothing, and in five seconds control will return to normal ATC operation. All codes will remain stored in the control.

²Depress any button within five seconds, other than A/C, and stop the test immediately. Control will return to normal ATC operation.

²Depress the A/C button within five seconds, and proceed to the erasing procedure. By depressing the A/C button, you will not erase any Failure Codes. You will only access the next part of the procedure. Proceed to step 3.

(3)After you depress the A/C button the display will alternate E's. This is for ERASE. You can now do two things:

²Do nothing, and in five seconds, all Failure Codes from 23 through 28 will be erased from the ATC control.

²Depress any button within five seconds, and Failure Codes will not be erased.

Control will return to normal ATC operation.