Trouble Shooting, Symptom, Possible Cause, Remedy

TROUBLE-

SHOOTING

You may have further ques- tions about this heater. If so, contact DESA International’s Technical Service Department at 1-800-323-5190.

WARNING

Never attempt to service heater while it is connected to propane supply, operating, or hot. Severe burns can occur.

SYMPTOM	POSSIBLE CAUSE		REMEDY
Pilot fails	1. Propane supply valve closed		1.	Open propane supply valve
to light.		on propane tank(s).		slowly.
	2.	Excess-flow check valve	2.	Close propane supply valve on
		closed.		propane tank and reopen
				slowly.
	3.	Air in gas line.	3.	Allow several minutes to purge
				air with automatic control
				valve button depressed.
	4.	Blockage in pilot orifice.	4.	Replace pilot orifice.
	5.	Piezo ignition system not	5.	Adjust ignitor electrode gap to
		sparking.		.120". Check wire lead for
				damage. Replace piezo ignitor
				and/or ignitor electrode as
				necessary.

Pilot lights	1.	Not enough warm-up time.	1.	Relight, hold automatic control
but goes				valve button in 45 seconds.
out when	2. Low gas pressure.		2.	Check propane tank(s) for
automatic				proper gas supply.
control valve	3. Thermocouple loose or		3.	Tighten connection or replace
button		needs to be replaced.		thermocouple.
is released.	4.	Automatic control valve	4.	Replace automatic control
		needs to be replaced.		valve.

Maximum	1. Main burner valve not fully		1.	Fully open main burner valve
burn rate		open.		by turning the valve handle
is low.				towards ON position until it
				stops.
	2.	Plugged gas orifices.	2.	Replace gas orifice.
	3.	Low gas pressure.	3.	Check gas supply; check
				regulator output.
	4.	Low fuel supply.	4.	Consult propane gas supplier.

Soot forming	1. Main burner valve not open		1.	Adjust main burner valve
inside heater,		enough.		slowly towards ON position
flame 100%				until flame has more blue
yellow.				color.
	2.	Low fuel supply.	2.	Consult propane gas supplier.

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