BTC 120-500 - AO Smith Water Heaters
BTC 120-500 - AO Smith Water Heaters
BTC 120-500 - AO Smith Water Heaters
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<strong>BTC</strong> TANK TYPE HEATERS<br />
SERVICE WORKBOOK<br />
TROUBLESHOOTING <strong>BTC</strong> WATER HEATERS<br />
To troubleshoot a <strong>BTC</strong> water heater check that:<br />
• <strong>120</strong> VAC is supplied to the heater<br />
• the tank is full of water<br />
• gas is supplied to the unit<br />
STEP 1 TO TEST THE TRANSFORMER, using a multimeter, test for 24VAC between the<br />
secondary transformer terminals.<br />
- If the meter does not read 24 VAC, check the <strong>120</strong> VAC connections and retest. If<br />
still no 24 VAC, replace transformer.<br />
- If the meter reads 24 VAC, go to Step 2.<br />
A.O. <strong>Smith</strong> <strong>Water</strong> Products<br />
Irving, Texas ©1998<br />
21<br />
Service Workbook<br />
Training Department
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