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Lochinvar AWH1000NPM User Manual

Lochinvar AWH1000NPM
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39
3 Troubleshooting
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
FAULT DESCRIPTION CORRECTIVE ACTION
Low 24 VAC
120 VAC input to the main control board has
dropped below 80 VAC.
Check 120 VAC supply to the transformer.
Check wiring connections at the low voltage terminal
strip.
Check the wire size/length to remote devices.
Replace the transformer.
Watch Dog Error
The main control board has detected an
internal fault.
Replace the main control board.
Write EEProm
The main control board has detected an
internal fault.
Replace the main control board.
CRC Parameters
The main control board has detected an
internal fault.
Replace the main control board.
No Error Stored
The main control board has detected an
internal fault.
Replace the main control board.
Fatal Error
Parameters
The main control board has detected an
internal fault.
Restore the default parameters.
Replace the main control board.
Replace the display board.
Service Manual

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Lochinvar AWH1000NPM Specifications

General IconGeneral
BrandLochinvar
ModelAWH1000NPM
CategoryWater Heater
LanguageEnglish

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