TROUBLESHOOTING
TEST 2: POLARITY CHECK
Conditions:
•No hot water
•Green “Power” LED is on.
•Tank is more than 5° F below temperature dial setting.
•Red ignition control board diagnostic LED is flashing 6 times between pauses.
•Red, diagnostic “Call for Heat”
Figure 20
BL
BR
BK
W
RR
W
TO EARTH
GROUND
R |
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| 1a 1 1b |
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| R |
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NEUTRAL
EARTH GROUND
IGNITOR/FLAMESENSOR
120 VAC CIRCUIT FACTORY INSTALLED BY INSTALLER120 V.
Ground
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| Figure 21 |
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| TEST 2 | Polarity Check |
| Check from on/off switch center and white wire terminals to ground | |
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| IF | then |
| see Test 1. | |
| Voltage is present white (right terminal) to ground | reverse supply wire connections. Polarity is reversed. |
| but not black (center terminal) to ground |
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Servicing should only be performed by a Qualified Service Agent
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