Maytag POF1HD091AVFA, Installation, Operation And Maintenance Manual

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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