TROUBLESHOOTING
TEST 6: BLOWER ON, NO IGNITION
Conditions:
•Power on
•Plugs in receptacles
•Blower (Draft Inducer) operating
•No power to Hot Surface Igniter (HSI). Note LED flash code.
Blower | Blower |
Prover Switch | Exhaust |
Hot Water Outlet | Blower |
| (Draft Inducer) |
Check E4 pin 2 to ground
Figure 25
| TEST 6 | 24 VAC Check of Blower Prover Switch Circuit | |
| IF | then | |
| ignition board receptacles E1, Pin 7 to ground | replace Ignition board. | |
| shows no voltage |
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| E1, Pin 7 has 24 Volt to ground | check wire connection to and from blower (draft inducer). | |
| voltage check of each blower switch terminal to | • | switch is open. Check for proper draft (should also see LED 3 flash code). |
| ground shows voltage to only 1 terminal | • | check for blocked exhaust. |
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| • | check that blower outlet exhaust damper is open. |
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| • | replace blower prover switch. |
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Servicing should only be performed by a Qualified Service Agent
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