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AHX/MX Air Handler - Lockout Codes

Article ID: 400
Last updated: 3 Nov, 2017

York Air Handler: AHX/MX

Re: Lockout Codes / Fault Codes

The air handler control shall provide fault codes using the Status LED. The table below describes the LED displays during fault codes.

The "lockout" can be Reset by cycling power to the air handler.


LOCKOUT CODES:

Flashes Description
OFF No power to control
Pulse Normal Operation
Rapid Test mode
ON Control failure
1 Limit switch currently open
2 Multiple limit openings - No call for heat
3 Multiple limit openings - call for heat
4 Long duration limit trip
5 Multiple long duration limit trips
6 Motor Failure
7 "O" energized with "W"
9 Control recovered from internal event
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Article ID: 400
Last updated: 3 Nov, 2017
Revision: 4
Access: Public
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