SBN71-120 thru SBN85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
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Ashland City, Tennessee
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TEST 7 – INDUCER ON, PROVER SWITCH AND LOW GAS PRESSURE SWITCH
CLOSED ....................NO IGNITOR OPERATION
Conditions:
●
Power on
●
Plugs in receptacles
●
Inducer on
●
24V at ignition board E1, Pin
10
●
No Power to IGNITOR
Note:LED Flash code
TEST 7
Voltage check and continuity check of hot surface IGNITOR
circuit
Continuity check - Power off- Plug removed from E4 receptacles.
Nominal 80 VAC check - Plug in E4- Power "On".
If.......
then.......
Continuity
is not indicated
between E4plug pin 2 to 4.
Check wiring and connection from E4 plug to HSI receiving
plug...................Replace HSI Assembly
Continuity
is present
Resistance should be between 11 and 20 Ohms at a
temperature of 77°F
Voltage
is not present
between E4, Pin 2 to ground
Replace ignition board
Voltage
C
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i
ontinue
Voltage
is not present
between E4, Pin 4 to ground
Check wiring and plug connections to HSI.........Replace HSI
Voltage
is present
Note ignition board, Flash code LED.............HSI should work
CHECK E1PIN 10 TO
GROUND – 24 V.
CONTINUITY TEST E4
PLUG
CHECK E4 PIN 4 TO GROUND