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KB Home / Equipment / Rooftop Units / York / Predator DH, DM, / Control Board - Diagnostic Codes

Control Board - Diagnostic Codes

Article ID: 241
Last updated: 9 Mar, 2017

York Rooftop Units: ZF, DM

Re: Unit Control Board - Diagnostic Codes

There are two control boards on this unit. The main unit controller mounted in the electrical control panel and the ignition control board mounted in the burner section.

Unit Control Fault Indicators
On Control Failure - Replace Control
Pulse Normal Operation
1 Flash Not Applicable
2 Flash Control waiting (short-cycle delay)
3 Flash Compressor 1 HPS Lockout
4 Flash Compressor 2 HPS Lockout
5 Flash Compressor 1 LPS Lockout
6 Flash Compressor 2 LPS Lockout
7 Flash Compressor 1 FreezeStat Lockout
8 Flash Compressor 2 FreezeStat Lockout
9 Flashes* Ignition Control Fault
10 Flashes Compressor 1 off due to Low OA Temp
11 Flashes Compressor 2 off due to Economizer
12 Flashes Fan Overload Tripped
13 Flashes Low Voltage Detected
14 Flashes Control Failure
Off No Power or Control Failure

* Code 9 - You must check the Ignition Control Board for the actual fault condition.

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Article ID: 241
Last updated: 9 Mar, 2017
Revision: 4
Access: Public
Views: 50
Comments: 0
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