HearthRite HB20ML-1 Owner'S Operation And Installation Manual Download Page 14

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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 in,
there is no spark at ODS/pilot.

When ignitor button is pressed in,
there is a spark at ODS/pilot but no
ignition.

ODS/pilot lights but flame goes out
when control knob is released.

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.  Gas  supply    is  turned    off    or
    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.
7.   Depleted gas supply.

1.   Control knob is not fully pressed in.
2.   Control  knob  is not  pressed  in
      long enough.
3.   Equipment  shutoff  valve  is not
      fully open.
4.   Thermocouple   connection   loose
      at  control  valve.
5   P i l o t   f l a m e   i s   n o t   t o u c h i n g
    t h e r m o c o u p l e .     T h i s   a l l o w s
    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.
7.   Contact local propane/LP gas

campany.

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  propane/LP  gas
      company.
      B)    Clean   ODS/pilot (see  Cleaning
     and   Maintenance.  Page 13)   or
      replace  ODS/pilot  assembly.

6. Replace thermocouple.
7. Replace control valve.