Gas-Fired Products PTU Series, PTS Series manual Form

Does the amber light stay on past 10 seconds?

Is the knob on the gas		Through the		See next page for
valve turned to the		inspection window is		troubleshooting
No ON position?	Yes	there a flame visible	No	sequence.
		during start up?
No		Yes
Turn on the gas		Does LED on the		Is the heater properly	Check the micro		Replace ignition
valve?		ignition module flash		grounded?	Amps at the FC-FC+		module.
		three times?	Yes	No	terminals of the	Yes
					module is it greater
					than 0.7µA with flame.
		No		Yes	No
		Replace ignition		Correct grounding	Check the terminal on		Remove and inspect		Check flame sense	Contact factory for
		module.		problem.	the flame sense		flame sense		wire does it have	assistance.
					electrode, is it tight? Yes		electrode. Is it clean	Yes	continuity?	Yes
							and the ceramic

intact?

No	No	No
Adjust terminal	Repair or replace	Replace flame sense
connection. Restart	flame sense	wire.
troubleshooting.	electrode.

–44–

Yes
Does the amber light	Does LED on the
stay on until the	ignition module flash
thermostat turns off?	No once?

Check the air intake and vent are there

Yes any blockages?

	Clean blower wheel.		Replace air switch
	Restart
	troubleshooting.
	No		Yes
	Remove blower is the		Check the pressure
			across the air switch
	wheel free from dirt
		Yes	during hot running is
No	and dust?
			it higher than the
			minimum required?

Repair or replace	Replace blower
jumper check all wire	assembly.
terminals.

No			Yes
Does LED on the		Contact factory for	Remove blockage.
ignition module flash		assistance.	Restart
three times?	No		troubleshooting.
Yes
Check the gas supply		Check gas pipe
pressure with all the		sizing, regulators and
heaters on. Does it	No	system supply gas
stay above the		pressures.
minimum required?

No	No		No
Check turbulator, are	Check vent and fresh		Remove blower does
the correct number of	air lengths, are they		the wheel turn freely?
lengths installed? Yes	within the maximum	Yes
	permissible?
No			Yes
Change number of	Replace air plate.		Check air plate
turbulators.			stamped part
		No	numbers. Are they
			correct?

Form

Yes
After an initial step		Remove burner	Is the heater properly
opening is the		casting and check	grounded?
manifold gas	Yes	the orifice. Is it clean	Yes
pressure correct?		and free from
		blockage?
No		No	No
Adjust manifold		Remove blockage.	Correct grounding
pressure. Restart		Restart	problem.
troubleshooting.		troubleshooting.

Check the micro		Contact factory for
Amps at the FC-FC+		assistance.
Yes terminals of the	Yes
module is it greater
than 0.7µA with flame.
No
Check the terminal on		Remove and inspect	Check flame sense
the flame sense		flame sense	wire does it have
electrode, is it tight?	Yes	electrode. Is it clean	Yes continuity?
		and the ceramic
		intact?

Yes

Contact factory for assistance.

Contact factory for assistance.

Yes

#43343330 May 08

Yes	No	No	No
Troubleshoot Ends	Adjust terminal	Repair or replace	Replace flame sense
	connection. Restart	flame sense	wire.
	troubleshooting.	electrode.