TROUBLESHOOTING
TEST 5: CALLING FOR HEAT - NO BLOWER OPERATION
Conditions:
•Power on
•Plugs in Receptacles
•Red “ Call for Heat” LED - ON
•Blower (Draft Inducer) off
Note flash code on ignition control board diagnostic LED.
Water Heater Control - Thermostat
“Call for Heat” LED Indicator
Diagnostic LED
Indicator
120 | Ignition Control Board |
Ground
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| Figure 24 |
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| TEST 5 |
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| IF | then | |
| Pin 1 to ground check has no voltage | • | reset control by interrupting power. Note possible reasons for this from flashing LED code. |
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| • | replace ignition board. |
| Pin 1 to ground has voltage | Proceed | |
| Pin 3 to ground has no voltage | • | check wiring harness and plugs. |
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| • | replace blower. |
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Servicing should only be performed by a Qualified Service Agent
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