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ZF - Ignition Lockout Codes

Article ID: 685
Last updated: 4 Nov, 2021

York Rooftop Unit: ZF

Re: Ignition Lockout Codes

Light Status Description
Off No Power
On Control Failure - Replace Control
Heartbeat Normal Operation - No faults
2 Flashes Pressure switch stuck closed
3 Flashes Pressure switch failed to close
4 Flashes Limit switch open
5 Flashes Flame present with no call for heat
6 Flashes Ignition failure
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Article ID: 685
Last updated: 4 Nov, 2021
Revision: 3
Access: Public
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