TROUBLESHOOTING
TEST 7: BLOWER ON, BLOWER PROVER SWITCH CLOSED, NO IGNITER OPERATION
Conditions:
•Power on, but no power to igniter
•Plugs in receptacles
•Blower (Draft Inducer) on
•24V at ignition board E1, Pin 10
Check E1 pin 10 - 24V
Check E4 pin 4 to Ground
Ground
Check E4 pin 2 to Ground
Ground
Continuity
Test
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E4 Plug
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| Figure 26 |
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| TEST 7 | Voltage check and continuity check of hot surface igniter circuit |
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| Continuity check - Power off- Plug removed from E4 receptacles. |
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| Nominal 80 VAC check - Plug in E4- Power on. |
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| IF | then |
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| Continuity is not indicated between E4 plug | • | check wiring and connection from E4 plug to HSI receiving plug. |
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| pin 2 to 4. | • | 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 | • | check wiring and plug connections to hot surface igniter (HSI). |
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| ground | • | replace HSI if needed. |
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| Voltage is present | Note ignition board flash code LED. Hot surface igniter (HSI) should work. |
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Servicing should only be performed by a Qualified Service Agent
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