Turn up thermostat.

No

Is there power (230V)

Does the fan turn on?

to the control panel? Yes

 

 

No

Check clock program.

Reset as required.

No

 

 

Is the clock set to on? Yes

Is there power output

No

to the fan?

 

 

 

Yes

 

Refer to control panel

IOS manual for troubleshooting.

16.2 Troubleshooting Flow

Check thermostat

and replace if necessary.

Yes

 

After 20 second pre-purge

Unplug burner and check

Is there spark at the igniter? No

electrode and ignition wire.No

 

Are they damaged?

 

Yes

 

Replace electrode and

 

ignition wire as needed.

Fan motor may have to

No

be replaced.

 

Is the igniter gap

Yes

set at 3 mm?

 

No

 

Carefully reset gap

 

to 3 mm.

 

Disconnect power to the

motor. Does the

motor turn freely?

No

Is there an obstruction to

the pump impeller?

Is the flue pipe or

the inlet of the

burner obstructed?

No

Are the hoses to the

pressure switch secure

and leak free?

Yes

Yes

Yes

Yes

Motor may have have

 

Is the motor connected

tripped overload switch.

No

properly? Refer to the

Wait 10 - 15 minutes for

 

wiring diagrams on the

automatic reset.

 

motor and in the

 

 

installation manual.

Remove obstruction.

 

 

Remove obstruction.

Repair, replace or

tighten hoses as necessary.

Chart (Multiburner)

65 of 73

Replace automatic

 

Remove electrical plug

No

from the pressure switch;

control unit.

place jumper between

 

 

 

black & white leads.

 

 

Does the fan turn on?

 

 

Yes

 

 

Replace pressure switch.

SECTION 16: TROUBLESHOOTING

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Roberts Gorden HE25UT, HE20ST, HE50DL, HE45UT, HE30DL, HE50ST, HE35UT, HE50UT, HE45ST Chart Multiburner, Troubleshooting Flow