SBN TANK TYPE COMMERCIAL GAS WATER HEATER
SERVICE HANDBOOK
TEST 8 - IGNITER HEATS – NO MAIN BURNER
Conditions:
Plugs in receptacle
Igniter energizes (gets red)
No main burner or main shuts off within 5 seconds.
Note flash code of LED.
Pin 9
Pin 12
24 | 24 |
|
E1 Plug, Pin 9 | E1 Plug, Pin 12 |
Plug in Receptacle | Plug in Receptacle |
TEST 8
Test of Igniter and gas valve circuit
If… | ...then |
|
short heat up time of igniter | • check control box grounding |
|
| • check for 24V from E1, Pin 12 to ground during 4 | |
normal (Approximate 20 seconds) | second trial. |
|
warm up - no ignition | - Yes - Continue |
|
| - No - Replace Igntion Board |
|
no voltage present E4, Pin 12 to | replace ignition board |
|
ground |
|
|
24 Volt was present from E1, Pin | • check that air has been purged from gas circuit |
|
12 to ground, but no main burner | • check that wiring and connections to gas valve and | |
| E1, Pin 9 are correct |
|
| • check for 24 VAC at E1, Pin 9 to ground during 4 | |
| second trial |
|
|
|
|
Technical Training Department | 33 | ©2003 |
|
| |
Ashland City, Tennessee
