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• Maytag POF1HD140AVFA Installation, Operation And Maintenance Manual

Maytag POF1HD140AVFA Installation, Operation And Maintenance Manual

Download Installation, operation and maintenance manual of Maytag POF1HD091AVFA Furnace for Free or View it Online on All-Guides.com.

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ELECTRICAL SHOCK HAZARD.

TROUBLESHOOTING IS DONE WITH THE

SYSTEM POWERED. BE CAREFUL TO

OBSERVE ALL NECESSARY PRECAUTIONS

TO PREVENT ELECTRICAL SHOCK OR

EQUIPMENT DAMAGE.

PRELIMINARY CHECKS:

Make sure that limit switches are closed and those

contacts are clean.

Check for line voltage power on the oil primary

control black and white lead wires.

Refer to Table C-3 or C-4 for further troubleshooting

information.

Table C-3: Oil Primary Control TROUBLESHOOTING

Condition: Burner motor does not start when there is a call for heat.

Procedure Status Corrective Action

1. Check that limit switches are

closed and contacts are clean.

N/A N/A

2. Check for line voltage power at

the oil primary control. Voltage

should be 120 Vac between the

black and white lead wires on the

oil primary control.

N/A N/A

Indicator light is on.

Cad cell is defective, sees external light, or connections

have shorted. Go to step 4.

3. Check indicator light with

burner off, no call for heat (no

flame).

Indicator light is off. Go to step 5.

Indicator light turns off.

Eliminate external light source or permanently shield cad

cell.

4. Shield cad cell from external

light.

Indicator light stays on.

Replace cad cell with new cad cell and recheck.

If indicator light does not turn off, remove yellow lead

wires from oil primary control and recheck.

If indicator light is still on, replace the oil primary control.

If the indicator light turns off, replace cad cell bracket

assembly.

Burner starts.

Trouble is in thermostat circuit. Check thermostat-wiring

connections.

If connections are clean and tight, check thermostat wires

for continuity.

Disconnect line voltage power and open line switch.

Check all wiring connections.

Tighten any loose connections and recheck.

If burner still doesn't start, replace the oil primary control

5. Jumper thermostat (T -T)

terminals on oil primary control

IMPORTANT

First remove one thermostat lead

wire.

Burner does not start.

If burner still doesn't start, check the oil burner motor. It

may be seized or burned out.

Condition: Burner starts then locks out on safety with indicator light flashing at 1 Hz rate (½ second on, ½ second off)

Procedure Status Corrective Action

1. Check that the limit switches

are closed and contacts are clean.

- - - - - -

2. Check for line voltage power at

the oil primary control. Voltage

should be 120 Vac (nominal)

- - - - - -

Indicator light is on.

Cad cell or controller is defective, sees external light, or

connections are shorted. Go to step 4.

3. Check indicator light with

burner off, no call for heat (no

flame).

Indicator light is off. Go to step 5.

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