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Fault Codes
Fault Code Displayed
F10,12 or F20
F11,13 or F21
F16/F17*
F18*, F63* or F64*
F19
F30
F31
F32 or F33
F38*
F39*
F22 or F40
F41#
F44 or F45
F70#
F71
F76
F77
F90
F94
* Applies to models with integrated mixing valve
# Applies to models with sensing anode
Wiring Diagram
(if equipped)
T1
T2
e2 Personality
module
T7
T6
MIXING
VALVE
TCO1
TCO1
(if equipped)
• •
1
• •
• •
• •
• •
BLACK
•
BLACK
11
Non-EMV models: Use
J802 Jumper plug
49-6000226 Rev. 6
Condition
Lower Heating Element Failure
Upper Heating Element Failure
No Hot Water - Mixing Valve Outlet DC TCO Tripped
on EMV models or missing jumper wire on non-EMV
models.
Mixing Valve Failure
Runaway Heat Source
Tank Temperature (T1) Failure open/short
Tank Temperature (T2) Failure open/short
Tank Temperature, (T1 or T2) Failure
Mixing Valve Outlet Temperature (T6) Failure
Mixing Valve Cold Inlet Temperature (T7) Failure
Current Sensor Failure
Sensing Anode miswired
Micro Fault
Anode Depleted
AC Current Transformer Miswire
Voltage too low
Stuck Key Failure
E2 module unplugged or damaged
WiFi Board Failure (WiFi icon dark)
•
• •
• •
J807
J301
• •
BLUE
1
BLUE
•
RED
•
RED
• •
MAIN BOARD
6
• •
AQUA
1
AQUA
• •
RED
RED
• •
ORANGE
BROWN
• •
AQUA
YELLOW
• •
RED
K402
BLACK
•
BLACK
11
NO
COM
•
•
M401
• •
• •
J602
K401
NO
COM
•
•
M402
•
NC
M403
UPPER ELEMENT
YELLOW
•
5500W 10.5
LOWER ELEMENT
PURPLE
•
5500W 10.5
Action
Call Service to replace heating element
Call Service to replace heating Element
Call Service to correct issue causing fault
Call service to diagnose and repair
Call Service to repair
Call Service to replace sensor
Call Service to replace sensor
Call Service to replace required sensor
Call Service to replace required sensor
Call Service to replace required sensor
Call Service to diagnose and correct
Confirm wire is connected to sensing anode
terminal. Call Service otherwise.
Call Service to repair
Call Service to replace sensing anode (see
anode replacement section in manual)
Call Service to diagnose and repair
Call Service for probable miswire
Call Service to diagnose and repair
Call Service to diagnose and repair
Call Service to diagnose and repair
L1 L2
1
3
TC01(ECO)
HI LIMIT
(180F)
2
4
•
~22.9 A
•
~22.9 A
19
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