HearthRite HR18MN-1, Owner'S Operation And Installation Manual

Page: 14 / 28

14
TROUBLESHOOTING
Note : All troubleshooting
items are listed in order of
operation.
WARNING: Only a qualified
service person should service and
repair heater.
CAUTION: Never use a wire,
needle, or similar object to clean
ODS/pilot. This can damage
ODS/pilot unit.
OBSERVED PROBLEM
When ignitor button is pressed and
control knob is pressed in and turned to
the PILOT position, there is no spark
at ODS/pilot.
ODS/pilot lights but flame goes out
when control knob is released.
When ignitor button is pressed and
control knob is press in and turned to
the PILOT position, there is a spark
at ODS/pilot but no ignition.
POSSIBLE CAUSE
1. Ignitor electrode is positioned
wrong.
2. Ignitor electrode is broken.
3. Ignitor electrode is not connected
to ignitor cable.
4. Ignitor cable pinched or wet.
5. Broken ignitor cable.
6. Bad piezo ignitor.
1 . G a s s u p p l y t u r n e d o f f o r
equipment shutoff valve is closed.
2. Control knob not fully pressed in
while pressing ignitor button.
3. Air in gas lines when installed.
4. ODS/pilot is clogged.
5. Gas regulator setting is not correct.
6. Control knob not in PILOT position.
1. Control knob is not fully pressed
in.
2. Control knob is not pressed in
long enough.
3. Equipment shutoff valve not fully
open.
4. Thermocouple connection loose
at control valve.
5 Pilot flame is not touching
thermocouple, which allows
thermocouple to cool, causing
pilot flame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/ pilot
6. Thermocouple damaged.
7. Control valve damaged.
REMEDY
1. Replace ignitor.
2. Replace ignitor.
3. Reconnect ignitor cable.
4. Free ignitor cable if pinched by
any metal or tubing. Keep
ignitor cable dry.
5. Replace ignitor cable.
6. Replace piezo ignitor.
1. Turn on gas supply of open
equipment shutoff valve.
2. Fully press in control knob
while pressing ignitor button.
3. Continue holding down control
knob. Repeat igniting operation
until air is removed.
4. Clean ODS/pilot (see Cleaning and
Maintenance, Page 13) or
replace ODS/pilot assembly.
5. Replace gas regulator.
6. Turn control knob to PILOT
position.
1. Press in control knob fully.
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds.
3. Fully open equipment shutoff valve.
4. Hand tighten until snug, then
tighten 1/4 turn more.
5. A) Contact local natural gas
company.
B) Clean ODS/pilot (see Cleaning
and Maintenance, Page 13)
or replace ODS/pilot assembly.
6. Replace thermocouple.
7. Replace control valve.