Napoleon NPS45 Installation And Operating Instructions Manual page 48

48
SYMPTOM
HEATER SHUTS OFF AND THE #3 LIGHT FLASHES
The hopper is out of
pellets.
The hopper lid open.
The burnpot is not
seated completely
into the burner
housing.
The burnpot holes
are blocked.
The air inlet, the
interior chambers, or
exhaust system has
a partial blockage.
The auger shaft is
jammed.
The auger motor has
failed.
The low limit switch
has malfunctioned.
The fuse on the
control board has
blown.
The control board is
not sending power to
the low limit switch or
other auger system
components.
HEATER FEEDS PELLETS, BUT WILL NOT IGNITE
Blockage in igniter
tube or inlet for
igniter tube.
The burnpot is not
seated completely
into the burner
housing.
Defective igniter.
The control board is
not sending power to
the igniter.
TP - TROUblE ShOOTING_PEllET_45_2
W415-0702 / 10.30.08
- Refill the hopper.
- Close the hopper lid.
- Ensure the burn pot locating notch engages with the ignitor and that the burn pot sits flat.
- Remove the burnpot and thoroughly clean it.
- Follow all cleaning procedures in the maintenance section of the manual.
- Start by disconnecting the power supply and emptying the hopper.
- The auger shaft may be jammed. For more information see "IN THE EVENT OF A JAMMED AUGER"
section.
- Remove the auger motor from the auger shaft and try to run the unit. If the motor will turn, the shaft is
jammed on something. If the motor will not turn, the motor is defective.
- Temporarily bypass the low limit switch by disconnecting the two brown wires and connecting them together
with a short piece of wire. Then plug the heater back in. If the heater comes back on and works, you need to
replace the low limit switch. This is for testing only. DO NOT LEAVE THE SWITCH BYPASSED. Your
blowers will never shut off and if the fire went out the auger will continue to feed pellets until the hopper is
empty if you leave the low limit switch bypassed.
- Remove the control board. If the fuse appears to be defective, replace it with a 5 Amp 250 Volt fuse. Plug
the heater back in and try to run the unit.
- There should be a 5-volt (approximately) current going to the low limit switch after the heater has been on
for 10 minutes.
- Find the igniter housing on the backside of the firewall. The air intake hole is a small hole located on the
side of the housing. Make sure it is clear. Also, look from the front of the heater to make sure there is not
any debris around the igniter element inside of the igniter housing.
- Ensure the burn pot locating notch engages with the ignitor and that the burn pot sits flat.
- Put power directly to the igniter. Watch the tip of the igniter from the front of the heater. After about 2
minutes the tip should glow. If it does not, the igniter is defective.
- Check the voltage going to the igniter during startup. It should be at full current (115 volts). If the voltage is
lower than full current, check the wiring. If the wiring checks out good, the board is defective.
TEST SOLUTION