Saturn 125 - Troubleshooting Common Furnace Issues; Burner Not Running (No Power); Burner Not Running (Power On)

Operator's Manual: Models Saturn™ 140 & Saturn™ 230
10-3
PROBLEM POSSIBLE CAUSE POSSIBLE ACTION(S)
Burner won’t run at all and
Green power light is NOT ON.
1. Circuit breaker/main switch open.
2. Fuse/breaker blown.
3. Burner cable is damaged or not
plugged in properly.
1. Close circuit breaker/switch.
2. Electrician should check out
electrical system.
3. Check burner cable.
Burner won’t run at all and
Green power light is ON.
1. Oil primary control has shut down
on safety reset.
2. Wall thermostat is not operating.
3. Heater block is not heating up.
4. F-120 proving switch has not
closed.
5. Oil primary control terminals are
not wired correctly.
6. Oil primary control is damaged.
7. The L290 or L-290 limit switches
have opened.
1. Follow the directions in Section 7
to reset the oil primary control.
2. Check the wall thermostat and
thermostat cable.
3. Feel the heater block; it should be
at least 120
O
F. If the heater
block is NOT HOT: (a) Wait 15
minutes for the heater block to
heat up and re-check, and (b)
Check the block heater
thermostat and block heater
element. Refer to the wiring
diagram and ladder schematic in
Appendix B.
4. If the block is HOT: (a) Check the
red wire going to the F-120
proving switch in slot #13 of the
terminal block for power. If there
is NO power at #13, refer to the
wiring diagram and ladder
schematic in Appendix B to
troubleshoot the circuit that
provides power to the proving
switch. (b) If there is power at
#13 going to the proving switch,
check for power at the red wire in
slot #4 on the terminal block. If
there is NO power at #4, replace
the F-120 proving switch.
5. Check the oil primary control: (a)
Check that the “F” terminals are
NOT jumped. (b) Check that the
two yellow cad cell wires are
connected to the “F” terminals. (c)
Check that the two thermostat
wires are connected to the “T”
terminals.
6. Replace oil primary control: (a)
Check voltage – it must be 115
volts.
7. Test the switch for power. Note
that power should be indicated on
both sides of the switch. See
section 7.