American Standard Cadet PRO 215AA Series Installation Instructions Care And Maintenance page 337

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 agent
in your area.
POSSIBLE CAUSES - CHECK/REPAIR
• Ensure excessive wind is not pressurizing the intake air or
exhaust pipe.
• Confirm wire connections of the blower prover switch are
clean, tight, and not jumped/shorted.
• Use multi-meter to check continuity/resistance of blower prover
pressure switch. Switch should be open (no continuity) when
blower is not operating. Replace switch if contacts are closed
when blower is off.
• Confirm that blower runs during a call for heat.
• If blower runs, confirm sensing tube is connected and clear of
obstructions, blower port for sensing tube is clear of obstructions,
and wire connections for blower prover switch are clean and tight.
• If all above conditions are met, replace pressure switch.
• If Blocked Intake error occurs before blower runs, make sure
pressure switch connections are clean and tight. Check pressure
switch continuity/resistance. Switch should be closed
(continuity/0 ohms). Replace switch if open (no continuity).
• If Blocked Intake error occurs when blower is running, check for
restrictions in intake pipe, including intake air connection, outside
termination, and inlet condensate drains (if installed).
• Other possible causes: High wind conditions, excessive negative
air pressure in building.
• 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.
• Confirm the water heater is full of water.
• Confirm the powered anode wire connections are tight and free of
debris or moisture (i.e. rust, solder, metal pipe shavings).
• Confirm proper electrical ground to the water heater.
NAT GAS WATER HEATER
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DISPLAYED FAULT/ALERT MESSAGE
Blower Operation Error
Fault occurred 2 mins ago
Blower Prover Pressure Switch may
have failed closed. Check/replace
pressure switch.
Call a service professional:
Your Company Name Here
(press [DOWN] for more....)
BACK ADVANCED
Blower Prover Open
Fault occurred 2 mins ago
The blower prover switch remains
open after the blower has been
energized.
Call a service professional:
Your Company Name Here
(press [DOWN] for more....)
BACK ADVANCED
Blocked Air Intake
Fault occurred 2 mins ago
Restriction in air intake. Check
intake pipe and termination for
blockage.
Call a service professional:
Your Company Name Here
(press [DOWN] for more....)
BACK ADVANCED
Energy Cut Out (ECO)
Fault occurred 2 mins ago
Tank temperature is excessive.
The water heater has been
disabled.
Call a service professional:
Your Company Name Here
(press [DOWN] for more....)
BACK ADVANCED
Alert:
No Water
Alert occurred 2 mins ago
No water detected by Powered
Anode.
Call a service professional:
Your Company Name Here
(press [DOWN] for more....)
BACK ADVANCED