Error code reference

Goodman HVAC Error Code 1

Ignition failure, open rollout switch, or open auxiliary limit switch detected by the DSI ignition control module.

SourceGoodman HVAC - Service Manual: Package Units (PC, PH, PGB Series)S-313

Diagnostic procedure

The full 1 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check gas flow, gas pressure, gas valve, flame sensor, flame rollout, and auxiliary limit.

SourceGoodman HVAC - Service Manual: Package Units (PC, PH, PGB Series)S-313

Unlock with pass

More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

Unlock 1 procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

Where this code is documented

1 manual in the MyPros+ library documents this code for Goodman hvac.

Models covered by the manuals that document this code

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax

The full 1 procedure

Where this code is documented

Models covered by the manuals that document this code

Related Goodman hvac error codes