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FAULT AND ALERT MESSAGES (CONT)
Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service technician
in your area.
POSSIBLE CAUSES - CHECK/REPAIR
• If Blocked Intake error occurs before blower runs, make sure
pressure switch connections are clean and tight.
• If Blocked Intake error occurs when blower is running, check for
restrictions in intake pipe, including intake air connection, intake air
filter, outside termination, and inlet moisture drains.
• Other possible causes: High wind conditions, excessive negative
air pressure in building.
• Use a multi-meter to check the continuity / resistance of inlet air
pressure switch. Switch should be open (no continuity) when the
blower is off and closed (shorted) when the blower is on. Replace
the switch if necessary.
• Ensure wire connections to upper temperature probe are clean and
tight.
• Using a thermometer, check the water temperature of the heater.
• Use a multi-meter and check for continuity between the two red
wires of the upper temperature probe.
• If the two red wires are open (no continuity) and water temperature
is below 160°F, replace upper temperature probe.
• If the water temperature exceeds 195°F, turn off electric power and
gas supply and call Tech Support for further instructions.
DISPLAYED FAULT/ALERT MESSAGE
Blocked Air Intake
0 days 0 hrs 0 mins ago
Error Code: A7-1201
Restriction in air intake.
Check intake pipe and
termination for blockage.
Press the Advanced button for
High Temp Limit Exceeded
0 days 0 hrs 0 mins ago
Error Code: A5 - 401
Energy Cut Off has shut off
water heater due to high tank
temperature.
Press the Advanced button for
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