Burner controls, ignition and flame safeguards
Honeywell S89 / S8600 Direct Spark Ignition Module fault codes
What all 2 Honeywell S89 / S8600 Direct Spark Ignition Module fault codes mean, in plain words, with a risk grade for each. These come from the manufacturer's own manual. The fix for each one is in WERCS Diagnose.
Get the fixes · plans from $49/moUpdated July 22, 2026
| Code | What it means | Risk |
|---|---|---|
| Ignition safety lockout (failed trial) | Ignition safety lockout (failed trial) The main burner failed to ignite during the trial period, causing the gas control to close and locking out the system. | RED |
| Safe start lockout (flame present at start) | Safe start lockout (flame present at start) A flame or false flame signal was detected during a heat request, causing the module to lock out without starting the igniter. | RED |
Every code comes from the manufacturer's own manual. Subscribers see which manual and page.