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P3DH Lockout Codes

Article ID: 395
Last updated: 11 Jan, 2019

York Gas Furnace: P3DH/P3DN

Re: Lockout Codes


Red Light Status Description
On Faulty Control
Rapid Flash Low Flame Sense Signal
1 Lockout Caused by Flame Sensed
2 Pressure Switch Stuck Closed
3 Pressure Switch Stuck Open
4 High Limit or Blower Limit Open
5 Rollout Switch Open or Rollout Sensed
6* Lockout Caused by Pressure Switch (3 times)
7* Failed to Ignite (3 tries)
8* Loss of Flame (5 times)
9 Reversed Polarity
11 Improper Ground or Missing Jumper
= Lockout will Auto-Reset After 1 Hour
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Article ID: 395
Last updated: 11 Jan, 2019
Revision: 5
Access: Public
Views: 70
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