Roberts Gorden BH40UT/EF, BH35UT/EF, BH30UT/EF Troubleshooting Flow Chart Multiburner, 67 of

Turn up thermostat.	No	Is there power (230V)	Yes
		to the control panel?
Does the fan turn on?
		No

Check thermostat

and replace if

necessary.

Check clock program.

Reset as required.

No

Is the clock set to on?

Fan motor may have to

be replaced.

	Is there power output		Refer to control panel
Yes		No	IOS manual for
	to the fan?
			troubleshooting.
	Yes
	Disconnect power to the		Motor may have have tripped		Is the motor connected
		Yes	overload switch. Wait	No	properly? Refer to the wiring
	motor. Does the
			10 - 15 minutes for		diagrams on the motor and
	motor turn freely?
			automatic reset.		in the installation manual.
	No
No	Is there an obstruction to	Yes	Remove obstruction.
	the pump impeller?

16.2 Troubleshooting Flow Chart (Multiburner)

Yes
After 20 second pre-purge		Unplug burner and check
	No	electrode and ignition wire.	No
Is there spark at the igniter?
		Are they damaged?
		Yes
		Replace electrode and
		ignition wire as needed.

Is the igniter gap		Is the flue pipe or
	Yes	the inlet of the	Yes
set at 3 mm?
		burner obstructed?
No		No
Carefully reset gap		Are the hoses to the pressure	No
to 3 mm.		switch secure and leak free?
		Yes

Remove obstruction.

Repair, replace or

tighten hoses as necessary.

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Replace automatic

control unit.

Remove Black and Yellow No leads from the pressure switch;

place a jumper between leads.

Is there a spark?

Yes

Replace pressure switch.

SECTION 16: TROUBLESHOOTING