User Manual

Three Times
Ignition failure. The control module is in safety lockout.
Is
proper fuel
supplied to heater
inlet?
Connect proper
gas supply to
heater. Open all
gas shutoff valves.
Ye s
No
Is
proper gas
pressure supplied
to heater?
Yes
Provide proper gas
supply and pressure to
heater. Refer to
dataplate
No
Does
gas control valve
open? Check for manifold
pressure at outlet of
control valve
Is ignitor
properly
gapped?
Are
24 volts supplied
to gas control
valve?
Defective gas control valve. Replace it.
Yes
Yes
Check igniter gap and
regap, if necessary, to
specifications.
-- Defective Wires or
Connections, Repair
or
Replace.
-- Defective Ignition
Control Module.
No
No
No
Does igniter
spark?
Yes
Is
igniter high voltage
lead connected?
No
No
Connect high
voltage lead
Yes
A. Check high voltage lead
for continuity and tight connections. Replace if defective.
B. Defective, improperly
gapped, or dirty igniter, Replace, regap, or clean igniter.
C. Defective Ignition control.
Replace.control
Five Times
If control module does not reset, then replace it. (Internal board fault.) If module resets, then have qualified electrician check power source for power quality problems. (Frequency, line noise, line spikes, loose connections, too small wire gauge.)
Flame sense related problems. Check for cracked or dirty flame sensor, improperly positioned sensor, or poor flame sense ground.
Four Times Lockout from too many flame losses.
26
Does ignition control
receive 24 VAC at
terminal W during
ignition sequence?
No
Poor electrical
connections, repair
or replace
Improperly sized
electrical wiring
from thermsoat to
controller. Resize
electriclal wiring.
Yes