– 19 –
TROUBLESHOOTING GUIDE
System without Pilot
continued
Symptom Cause Remedy
9. Check power to gas valves. If
gas pressure matches unit rating
plate and valve does not open,
replace gas valve or actuator.
10. Make sure spark rod is producing
a sufficient spark to light off
burner, make sure porcelain is
not cracked. Check wiring or
replace if necessary.
11. Make sure flame rod is in flame.
Make sure porcelain is not
cracked. Check wiring or replace
if necessary.
12. Clean or replace regulator.
13. Check vent lines or replace
limiters.
14. Adjust setting on modulating
valve or gas valve.
1. See following troubleshooting
guide for Maxitrol series 14 & 44.
2. See following troubleshooting
guide for Honeywell.
C.
continued
D. Burner will not respond
to temperature.
9. Defective gas valve or actuator.
10. Defective spark rod or out of
position. (see spark rod diagram
#P-001004)
11. Flame rod not sensing flame.
(see spark rod diagram
#P-001003)
12. Defective regulator.
13. Blocked vent lines or vent
limiters.
14. Low fire set too low or too high.
1. For Maxitrol system.
2. For Honeywell system.
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