CLEAN BURN CB-1800 Manuel de l'opérateur télécharger pdf (Page 101)

Operator's Manual: Models CB-3500 & CB-5000

10-7

PROBLEM POSSIBLE CAUSE(S) POSSIBLE ACTION(S)

Pump will not prime and Pump motor is

NOT running.

1. ere is NO power on the pump

circuit from the burner.

2. e pump motor has shut o on

thermal overload

1. Start the burner and adjust the air

pressure regulator to 15 PSI. (a) If the

amber “pump” light on the burner

comes ON, the pump circuit on

the burner has activated properly.

Refer to the wiring diagram and

ladder schematic in Appendix B to

troubleshoot the pump circuit from

the burner to the pump. (b) If the

amber “pump” light on the burner

does NOT come ON, there is a

problem with pump circuit in the

burner. With the burner running,

check for power at the brown wire on

the air pressure switch. If there is NO

power at the brown wire, replace the

burner motor. If there is power at the

brown wire, replace the air sensing

switch.

2. (a) e pump motor is too hot the

internal thermal protection switch

shut the motor o. Wait for the motor

to cool down; the thermal switch will

automatically reset. Check voltage

and amperage draw of the pump

motor. Call your dealer if the problem

persists. (b) e coupling is not

adjusted properly, keeping the shas

of the motor and pump from turning

freely. Re-position the coupling so that

both shas turn freely. (c) e sha

on the motor or oil pump will not

turn freely. If you can’t turn the shas,

replace the faulty part(s).

Blower motor runs all the time. 1. Blower motor circuit is wired

incorrectly.

2. Blower relay is stuck in the closed

position

1. Refer to wiring diagram and

ladder schematic in Appendix B to

troubleshoot the blower circuit.

2. Test the blower motor contactor. If

it will not open when the power is

turned OFF, replace the contactor

Blower motor will not run. 1. e blower motor is not wired

correctly.

2. e fan / blower switch is defective.

3. e blower motor has overheated and

shut down on thermal reset.

4. Blower relay won't close

1. Check the fan motor wiring Refer

to the wiring diagram and ladder

schematic in Appendix B. Follow

the directions in Section 6 to test for

proper blower operation. If the blower

does not operate, shut OFF power to

the furnace and call your Clean Burn

dealer for service.

2. Replace the fan / blower switch.

3. e blower motor is too hot – the

internal thermal protection switch

shut the motor o. Wait for the motor

to cool down; the thermal switch will

automatically reset. Check voltage

and amperage draw of the blower

motor. Call your dealer if the problem

persists.

4. Test the blower motor contactor.

Check for proper voltage at the L1/

L2 lugs. Check the orange wire on the

coil for 110 volts. Replace if needed.

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