Heatilator ECO-NZ-PS35 Owner's Manual page 36

Symptom
Slow or smoky start-up Dirty exhaust and/or venting system.
(Cont'd)
Wet fuel / poor quality fuel
Feed system fails to Out of fuel.
start
#2 snap disc may be defective or tripped.
Vacuum switch not closing. No vacuum.
Defective vacuum switch
Feed system jammed or blocked.
Feed spring not turning with feed motor.
Feed motor defective or not plugged in.
Thermocouple may have failed. Amber light will
Amber light blinking
blink 3 times, pauses, and keeps repeating
No call light. Unit Thermostat not set to a high enough tempera-
does not begin start ture.
sequence.
Snap disc #3 tripped or defective.
No power.
Fuse blown.
Connections at thermostat and/or appliance not
making proper contact.
Defective thermostat or thermostat wiring.
Control box defective.
Unit fails to shut off. Call light on.
36
Possible Cause
Heatilator • ECO-NZ-PS35 • 7072-111B • December 1, 2011
Corrective Action
Check for ash build up in unit, including behind rear
panels, firebox, exhaust blower and venting.
Replace fuel
Check hopper, fill with fuel.
Reset or replace snap disc
Check vacuum fitting on auger tube for restrictions.
Check door rope and replace if necessary.
Check exhaust blower is plugged in and operating.
Check vacuum switch is plugged in. Check vacuum hose
is in good condition, clear and connected at both ends.
Check thermocouple is in good condition and plugged in
properly.
Make sure venting system is clean.
NOTE: High winds blowing into the venting system can
pressurize the firebox causing loss of vacuum.
Replace vacuum switch
Empty hopper of fuel. Use a wet/dry vacuum cleaner to
remove remaining fuel, from hopper, including feed tube.
Check feed chute for obstructions.
Remove feed assembly & check for obstruction.
Check that set screw is tight on feed spring shaft at end
of feed motor.
Check connections on feed motor, replace if defective.
Replace Thermocouple
Adjust thermostat above room temperature.
Reset snap disc or replace if defective.
Connect to power.
Replace fuse.
Check connections at thermostat and appliance. Tempo-
rarily jump connection to verify
Replace thermostat or wiring.
NOTE: To test thermostat and wiring, use a jumper wire
at the thermostat block on the unit to by-pass thermostat
and wiring.
Replace control box.
Turn thermostat off.
If call light does not go out, disconnect thermostat wires
from unit. If call light does go out, thermostat or wires are
defective.
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