LAARS U.H.E. - Service Manual - Manual (Page 30)

LAARS Heating Systems Page 30
Is igniter resistance
less than 150 Ohms
(cold)?
(see “check igniter
resistance” below)
Refer to ignition module illustration below,
is there 120VAC across terminals
P6(1) and P6(2)?
(Check during igniter warm up period,
indicated by the igniter LED glowing on the
ignition module).
Y
N
Replace
hot surface igniter
(see page 30)
Replace ignition module.
(see page 34)
N
Check harness
connection from igniter
to ignition module.
Y
Hot surface Igniter Testing Procedure
Volt meter set to
OHM setting
Meter probe
Hot surface
igniter
CHECK IGNITER
RESISTANCE
IGNITION MODULE
WARNING
120 volt potential exposure. Use caution
making voltage checks to avoid
personal injury. Igniter may be too hot
to handle, take necessary precautions
30