Honeywell S89 / S8600 Direct Spark Ignition Module
Honeywell S89 / S8600 Direct Spark Ignition Module 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.
Safety first. This code involves a gas, flame or electrical hazard. Do not keep resetting it. Leave burner, gas train and high voltage work to a qualified technician. WERCS answers 24/7 at (877) 489-3727.
- Code
- Safe start lockout (flame present at start)
- Name
- Not named in the manual
- Controller
- Honeywell S89 / S8600 Direct Spark Ignition Module
- Type
- Flame failure
- What it does
- Lockout: the control shuts down and stays off until it is reset
- Risk
- RED Specialist territory
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated July 22, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 4 common causes listed for this code
- The step by step check for this problem, one check at a time
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Honeywell S89 / S8600 Direct Spark Ignition Module Safe start lockout (flame present at start) mean?
A flame or false flame signal was detected during a heat request, causing the module to lock out without starting the igniter.
Is Honeywell S89 / S8600 Direct Spark Ignition Module Safe start lockout (flame present at start) dangerous?
It is graded red, specialist territory: it involves a burner, gas, flame or safety lockout, so leave the repair to a qualified technician.
How do I fix Honeywell S89 / S8600 Direct Spark Ignition Module Safe start lockout (flame present at start)?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Honeywell S89 / S8600 Direct Spark Ignition Module codes
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