Heatiator CB4842IR, CB4236IR owner manual Have accumulated on flame sensing rod

A. Intellifire Ignition System (continued)

4. Pilot lights but continues	A. A shorted or loose connection	Verify all connections to wiring diagram in manual. Verify
to spark, and main burner	in flame sensing rod.	connections underneath pilot assembly are tight. Verify connections
will not ignite. (If the pilot		are not grounding out to metal chassis, pilot burner, pilot enclosure
continues to spark after		or screen if present, or any other metal object.
the pilot flame has been lit,
	B. Poor flame rectification or	With fixed glass assembly in place, verify that flame is engulfing
flame rectification has not	contaminated flame sensing	flame sensing rod on left side of pilot hood. Flame sensing rod
occurred.)
	rod.	should glow shortly after ignition. Verify correct pilot orifice is
		installed and gas inlet is set to pressure specifications. Clean flame
		sensing rod with emery cloth to remove any contaminants that may
		have accumulated on flame sensing rod.
	C. Module is not grounded.	Verify module is securely grounded to metal chassis of appliance.
		Verify that wire harness is firmly connected to the module.
	D. Damaged pilot assembly or	Verify that ceramic insulator around the flame sensing rod is not
	contaminated flame sensing	cracked, damaged, or loose. Verify connection from flame sensing
	rod.	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.
	E. Module.	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.
5. The pilot and main	A. No LP in tank.	Check the LP (propane) tank. Refill the fuel tank.
burner extinguish while in
	B. Improper gas inlet pressure.	Verify with manometer. NG should read 5-14 inches w.c. LP should
operation.		read 10-14 inches w.c.
	C. Inner vent pipe leaking exhaust	Check venting system for damage. Replace/repair improperly
	gases back into the system.	assembled pipe sections.
	D. Glass installed improperly.	Check to ensure glass is installed properly. Replace glass panel
		assembly.
	E. Improper vent cap installation.	Check for proper installation and freedom from debris or blockage.
	F. High limit switch has been	This appliance is equipped with an auto reset high limit switch
	automatically activated.	which will shut down the appliance if it spills under flue blockage or
		excessive 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.

Heatilator • Caliber BV Series • 4040-262 • Rev M • 08/09 33