Error A035 - Rheem IKONIC RTGH-S11i Manual

ERROR CODE DIAGNOSTICS

ERROR A035

EXPLANATION
Improper thermistor connection
This tankless water heater has three thermistors (Inlet,
Outlet and Heat exchanger thermistor)
If one or more possibly has a poor connection or not con-
nected in proper location, the water heater displays the
"A035" error code on the Liquid Crystal Display (LCD) on
the User
Remove and reinsert each thermistor molexes
Turn Power OFF
Remove & reinsert connector "I"
Does A035 Error
code appear?
Yes
connector. The color of each molexes are
below:
Inlet thermistor: White
Outlet thermistor: Black
Heat exchanger thermistor: Yellow
Exhaust Thermistor: Red/Black
Does A035 Error
code appear?
Yes
Test ALL thermistor.
Follow instructions for:
A031-Error code
A032-Error code
A033-Error code
A036-Error code
49 IKONIC Tankless Water Heater Service Manual
Diagnostic Check
• Inlet thermistor
• Outlet thermistor
• Heat exchanger thermistor
• Exhaust Thermistor
Unit had a loose connection.
No
Thermistors appear to be OK.
No
Unit had a loose connection.
Thermistors appear to be OK.