andrews 32/143 Installation Manual, Operation And Service Manual page 74

APPENDICES
To view previous error codes:
Step 1:
In "Service Mode press the "Select" button until the next display after the "Software Version". If there are no current
error codes, the display will show -- .
Step 2:
Press the "Temperature Down" button to select the error code index, starting with the most recent error code "10".
Step 3:
Press the "Select" button to view the error code for "code 10". If there is a number displayed, note what the number is.
The label next to the water heater display will identify the code number. If no number is displayed with only a "--" in the
water heater display, then there has not been an error code for error code index 10.
°F
idle
Operational
Status
SELECT SET
idle
Operational
Status
SELECT SET
idle
Operational
Status
SELECT SET
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Troubleshooting