Roberts Gorden HE50UT, HE20ST, HE50DL U-Tube, Troubleshooting Flow Chart Linear, Double Linear

		Replace ignition	No
		module.
Turn up thermostat.		Place a jumper across
	No	the thermostat terminals. No
Does the fan turn on?
		Does the fan turn on?

Yes

Check thermostat wiring and replace thermostat if necessary.

Yes

Is there power out

from pin 10 on

ignition module?

Yes

Is there power (230V)

at the burner?

No

Check relay wiring

(if applicable) and wiring

to the burner.

Yes

Remove electrical plug

from the pressure switch; place jumper between black & white leads. Does the fan turn on?

Yes

Replace pressure switch.

Remove obstruction.

Replace Fan.

Yes

Unplug burner.

No Does the fan turn freely?

No

Yes Is the fan obstructed?

No

Fan bearings may have failed. Replace fan.

16.1 Troubleshooting Flow Chart (Linear, Double Linear

Is there spark at the	Unplug burner and check	Is the igniter gap
	No electrode and ignition wire. No
		set at 3 mm?
igniter?	Are they damaged?
	Yes	No
	Replace electrode and	Carefully reset gap
	ignition wire as needed.	to 3 mm.
		Replace automatic
		control unit.

63 of 73

	Is the flue pipe or
Yes	the inlet of the	Yes
	burner obstructed?
	No

Are the hoses to the pressure No switch secure and leak free?

Yes

Remove electrical plug No from the pressure switch;

place jumper between black & white leads. Does the fan turn on?

Yes

Replace pressure switch.

Remove obstruction.

Repair, replace or

tighten hoses as necessary.

and U-Tube)

SECTION 16: TROUBLESHOOTING