SBN71-120 thru SBN85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
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
CHECK E1PIN 10 TO GROUND – 24 V.
CONTINUITY TEST E4 PLUG
CHECK E4 PIN 4 TO GROUND
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 |
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Continuity is not indicated between E4plug pin 2 to 4. | Check wiring and connection from E4 plug to HSI receiving | ||
| plug | Replace HSI Assembly |
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Continuity is present | Resistance should be between 11 and 20 Ohms at a | ||
| temperature of 77°F |
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Voltage is not present between E4, Pin 2 to ground | Replace ignition board |
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Voltage is present | Continue |
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Voltage is not present between E4, Pin 4 to ground | Check wiring and plug connections to HSI | Replace HSI | |
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Voltage is present | Note ignition board, Flash code LED | HSI should work | |
State Water Heaters | 40 | Technical Training Department |
Ashland City, Tennessee © 2007 |
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