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49-7769
TROUBLESHOOTING TIPS
Error Codes
Electronic Control Error Code Diagnostics and Test Mode
Error Code Diagnostics
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corrected.
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Error Codes and Alarm Status
Unit Control Panel
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above these two digits indicate the current state of
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display contains a maintenance icon (wrench) that will
illuminate to indicate when the unit needs maintenance.
Check Error Codes:
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Clear History Counters:
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Error
Code
Problem Action
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2 ,QSXWYROWDJHRXWRIVSHFL¿FDWLRQ Unit stops, open all relays until voltage is back within specs then resumes operation
3 ,QGRRUWHPSHUDWXUHVHQVRULVRSHQRUVKRUWHG
Unit defaults to 75°)LQ&22/,1*RU°)LQ+($7,1*DQGZLOOFRQWLQXHWRRSHUDWH
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tinue to operate.
5 Outdoor coil temperature sensor is open or shorted
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outdoor temperature allows.
6
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times, the severity is increased and the unit operation is locked out.
7
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minutes
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° F the unit will resume operation after lockout time.
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8QLWF\FOHVOHVVWKDQWLPHVSHUKRXU 7KHXQLWZLOOFRQWLQXHWRRSHUDWHDQGEHPRQLWRUHG
Room freeze protection Only use if Electric Heat is available. Run High Speed and Electric Heat until room
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Wall stat problem or connection issue 7KHXQLWZLOOQRWRSHUDWH
Not applicable Not applicable
High pressure limit switch is open ,IXVLQJLVFRROLQJRUKHDWSXPSLVRQVKXWGRZQFRPSUHVVRU5XQKLJKIDQXQWLOVZLWFK
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Not applicable Not applicable
Heat pump error ,ILQGRRUFRLOWHPSHUDWXUHLVOHVVWKDQDPELHQWWHPSHUDWXUHIRUPLQXWHVWKHXQLWZLOOXVH
electric heat to satisfy the heating demand.
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error code will remain on until the temperature reaches the operating range and then the
unit will return to normal operation.
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Not applicable Not applicable
Not applicable Not applicable
Not applicable Not applicable
Not applicable Not applicable
22
2XWGRRUFRLOWHPSHUDWXUH°F for 2 consecutive
minutes
Unit will use electric heat to satisfy heating demands until the temperature equals or
H[FHHGV°F. Applicable for the Heat Pump models only.
23 Not applicable Not applicable
Not applicable Not applicable
ENTER SCROLL
OFF ON
On/Off
Error State
Enter
Button
Error
Code
History
Counter
Maintenance
Required
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Scroll
Button
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