Desa (V)T32N-A Series User Manual

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www.desatech.com
116646-01A
TROUBLESHOOTING
Note: 
All troubleshooting items are listed in order of operation.
  WARNING:  Turn  off  heater  and  let  cool  before 
servicing.  Only  a  qualified  service  person  should 
service and repair heater.
  CAUTION:  Never  use  a  wire,  needle  or  similar 
object to clean pilot. This can damage pilot unit.
POSSIBLE CAUSE
1.  Ignitor electrode not connected to ignitor 
cable
2.  Ignitor cable pinched or wet
3.  Piezo ignitor nut is loose
4.  Broken ignitor cable
5.  Bad piezo ignitor
6.  Ignitor electrode broken
7.  Ignitor electrode positioned wrong
1.  Gas  supply  turned  off  or  equipment 
shutoff valve closed
2.  Gas control knob not in PILOT position
3.  Gas control knob not pressed in while in 
PILOT position
4.  Air in gas lines when installed
5. Depleted gas supply (propane/LP models 
only)
6.  Pilot is clogged
7.  Gas regulator setting is not correct
1.  Gas control knob not fully pressed in
2.  Gas control knob not pressed in long 
enough
3.  Equipment  shutoff  valve  not  fully 
open
4.  Pilot flame not touching thermocouple, 
which  allows  thermocouple  to  cool, 
causing pilot flame to go out. This prob-
lem could be caused by one or both of 
the following:
  A) Low gas pressure
  B) Dirty or partially clogged pilot 
5.  Thermocouple connection loose at con-
trol valve 
6.  Thermocouple damaged
7.  Control valve damaged
REMEDY 
1.  Reconnect ignitor cable
2.  Free  ignitor  cable  if  pinched  by  any 
metal or tubing. Keep ignitor cable dry
3.  Tighten nut holding piezo ignitor. Nut is 
located behind the mounting bracket
4.  Replace ignitor cable
5.  Replace piezo ignitor 
6.  Replace pilot assembly
7.  Tighten electrode. Replace if necessary
1.  Turn on gas supply or open equipment 
shutoff valve
2.  Turn gas control knob to PILOT position
3.  Press in gas control knob while in PILOT 
position
4.  Continue holding down control knob. 
Repeat  igniting  operation  until  air  is 
removed
5. Contact local propane/LP gas company
6.  Clean pilot (see Cleaning and Maintenance, 
page 28) or replace pilot assembly
7.  Replace gas regulator
1.  Press in gas control knob fully
2.  After pilot lights, keep gas control knob 
pressed in 30 seconds
3.  Fully open equipment shutoff valve
4.  A) Contact local natural or propane/LP 
gas company
  B)  Clean  pilot  (see  Cleaning  and 
Maintenance, page 28) or replace pilot 
assembly 
5.  Hand tighten until snug, then tighten  
1/4 turn more
6.  Replace pilot assembly
7.  Replace control valve
OBSERVED PROBLEM
When ignitor button is pressed, there is no 
spark at pilot
When ignitor button is pressed, there is spark 
at pilot but no ignition
Pilot lights but flame goes out when control 
knob is released
TROUBLESHOOTING