Heatilator RBV4236IH Owner's Manual page 36

A. Intellifire Ignition System (continued)
4. Pilot lights but continues
to spark, and main burner
will not ignite. (If the pilot
continues to spark after
the pilot flame has been lit,
flame rectification has not
occurred.)
5. The pilot and main burner
extinguish while in opera-
tion.
36
A. A shorted or loose connection
in flame sensing rod.
B. Poor flame rectification or con-
taminated flame sensing rod.
C. Module is not grounded.
D. Damaged pilot assembly or
contaminated flame sensing
rod.
E. Module.
A. No LP in tank.
B. Improper gas inlet pressure.
C. Inner vent pipe leaking exhaust
gases back into the system.
D. Glass installed improperly.
E. Improper vent cap installation. Check for proper installation and freedom from debris or blockage.
F. High limit switch has been
automatically activated.
Heatilator • RBV4236/RBV4842 • 4048-210 • Rev S • 6/10
Verify all connections to wiring diagram in manual. Verify connec-
tions underneath pilot assembly are tight. Verify connections are not
grounding out to metal chassis, pilot burner, pilot enclosure or screen
if present, or any other metal object.
Verify that flame is engulfing flame sensing rod on left side of pilot
hood. Flame sensing rod should glow shortly after ignition. Verify
correct pilot orifice is installed and gas inlet is set to pressure speci-
fications. Clean flame sensing rod with emery cloth to remove any
contaminants that may have accumulated on flame sensing rod.
Verify module is securely grounded to metal chassis of appliance.
Verify that wire harness is firmly connected to the module.
Verify that ceramic insulator around the flame sensing rod is not
cracked, damaged, or loose. Verify connection from flame sensing
rod to white sensor wire. Clean flame sensing rod with emery cloth
to remove any contaminants that may have accumulated on flame
sensing rod. Verify continuity with a multimeter with ohms set at
lowest range. Replace pilot if any damage is detected.
Turn ON/OFF rocker switch or wall switch to OFF position. Remove
ignitor wire "I" from module. Place ON/OFF rocker switch or wall
switch in ON position. If there is no spark at "I" terminal module must
be replaced. If there is a spark at "I" terminal, module is fine.
Check the LP (propane) tank. Refill the fuel tank.
Verify with manometer. NG should read 5-14 inches w.c. LP should
read 10-14 inches w.c.
Check venting system for damage. Replace/repair improperly
assembled pipe sections.
Check to ensure glass is installed properly. Replace glass panel
assembly.
This appliance is equipped with an auto reset high limit switch which
will shut down the appliance if it spills under flue blockage or exces-
sive negative pressure conditions. Shut off the appliance and the
gas supply. Do not attempt to operate the appliance until it has been
examined by a qualified service technician.