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TROUBLESHOOTING
YOUR HEATER
TROUBLE
POSSIBLE
CAUSE
POSSIBLE
REMEDY
1. No power or low voltage at heater.
2. Safety control not functioning.
3. Motor not functioning.
4. Thermostat control (if used) not
functioning.
Electrical
Troubles
la.
Press reset button on safety control.
lb.
Be sure outlet is delivering adequate voltage.
lc.
Check condition of heater and extension
cord. Repair or replace.
ld.
Be sure extension cord complies with
requirements
as stated in this manual.
2.
Replace safety control.
3.
Check motor. Replace if necessary.
4.
Replace thermostat control.
Mechanical Troubles
Heater is plugged in but
motor does not start;
thermostat (if used) is set to
call for heat but motor does
not start.
Heater will not ignite, but
motor runs for a short time.
1. Fan obstructed by mechanical
damage or dirt.
2. Motor pump binding.
PAGE
5
3
5
3
la.
Check for bent sheetmetal
shells or shrouds; replace
_
if necessary.
lb.
Check for damaged fan; clean or replace if
8
necessary.
lc.
Check for damaged motor mounting bracket;
replace if necessary.
2.
Check pump for easy rotation; clean or
replace if necessary.
Fuel System Troubles
1. Fuel tank empty; water in fuel; wrong
la.
Fill tank if empty.
fuel.
lb.
Check for water in tank: clean tank and fuel
2. Fuel filter clogged.
3. Nozzle plugged or damaged.
3
6
4. Very low temperature may cause fuel
to thicken and not flow.
5. Dirty air filters.
6. Air leak at fuel filter.
filter if water is found (water in the tank will
form globules in the bottom which can be
seen).
lc.
Add fresh, clean fuel to tank.
6
2.
Remove and wash in clean fuel.
6
Reinstall.
3a.
Clean by blowing compressed
air through
nozzle from outlet end.
3b.
Replace nozzle if cleaning does not solve the
problem.
4.
Move heater into a warmer environment
until
3
fuel flows freely.
5.
Clean air filters.
6
6.
Check fuel line to fuel filter fit and fuel line to
nozzle adapter
for air leaks. Seal if needed.
A
Ignition Troubles
WARNING:
DISCONNECT
HEATER CORD!
1. Spark plug wire disconnected
from
plug.
2. Damaged spark plug. (Wrong gap,
plug wet with fuel or electrodes
carboned,
or plug damaged).
A
2d.
Replace a damaged spark plug.
WARNING:
HIGH VOLTAGE
1.
Install wire on plug.
7
2a.
Gap between
electrodes should be per.specification
7
chart. Adjust electrode gap.
7
2b.
Dry plug.
2c.
Inspect plug for worn or eroded electrodes,
replace if
7
necessary.
7
3. Damaged electronic ignitor.
Heater burns, but puffs of
smoke can be seen; heater
will not burn steady; heater
burns with odor; heater
smokes continuously.
3a. Unplug heater cord and removethe fan.
3b. Disconnect wire from spark plug and check for
spark;replace if no sparkcan be obtained.
Improper Fuel-Air Mixture (Not enough fuel)
la.
Check fuel tank. If globules of water are
seen in the bottom, drain and flush the tank
and filter with clean fuel.
lb.
Fill tank with fresh, clean fuel.
2.
Remove and clean the air filters. Be sure air
intake is not blocked.
1. Heater running out of fuel; water
condensation in fuel tank;wrong fuel.
2. Dirty air filters causing reduced air
flow through nozzle, resulting in low
fuel flow.
3
6
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