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49-6000226 Rev. 4 19
TROUBLESHOOTING
Fault Codes
Wiring Diagram
Fault Code Displayed Condition Action
F10 or F12 Lower Heating Element Failure Call Service to replace heating element
F11 or F13 Upper Heating Element Failure Call Service to replace heating Element
F16* Mixing Valve Outlet DC TCO Tripped Call Service to correct issue causing fault
and replace TCO.
F17 Missing jumper wire on non-EMV models Call Service to confirm issue and install
jumper wire plug.
F18*, F63* or F64* Mixing Valve Failure Call service to diagnose and repair
F19 Runaway Heat Source Call Service to repair
F30 Tank Temperature (T1) Failure open/short Call Service to replace sensor
F31 Tank Temperature (T2) Failure open/short Call Service to replace sensor
F32 or F33 Tank Temperature, (T1 or T2) Failure Call Service to replace required sensor
F38* Mixing Valve Outlet Temperature (T6) Failure Call Service to replace required sensor
F39* Mixing Valve Cold Inlet Temperature (T7) Failure Call Service to replace required sensor
F40 Current Sensor Failure Call Service to diagnose and correct
F41# Sensing Anode miswired Confirm wire is connected to sensing anode
terminal. Call Service otherwise.
F44 or F45 Micro Fault Call Service to repair
F70# Anode Depleted Call Service to replace sensing anode (see
anode replacement section in manual).
F71 AC Current Transformer Miswire Call Service to diagnose and repair
F76 Voltage too low Call Service for probable miswire
F77 Stuck Key Failure Call Service to diagnose and repair
F90 E2 module unplugged or damaged Call Service to diagnose and repair
F94 WiFi Board Failure (WiFi icon dark) Call Service to diagnose and repair
* Applies to models with integrated mixing valve
# Applies to models with sensing anode
TC01(ECO)
HI LIMIT
(180F)
1
2
3
4
1
11
L1 L2
UPPER ELEMENT
LOWER ELEMENT
5500W 10.5 ё ~22.9 A
5500W 10.5 ё ~22.9 A
M403
M401
•
NO
•
COM
M402
•
NO
•
COM
•
NC
K402
BLACK
RED
BLACK
BLUE
RED
BLUE
K401
••
•
•
•
•
•
•
•
•
•
•
•
•
•
T7
T6
MIXING
VALVE
TCO1
TCO1
AQUA
AQUA
RED
RED
ORANGE
AQUA
BROWN
YELLOW
RED
BLACK
BLACK
BLACK
BLACK
e2 Personality
module
J802
1
11
•
•
•
•
•
•
•
•
•
•
•
J802
J808
YELLOW
PURPLE
J801
•
•
•
•
•
•
T1
T2
BLUE
BLUE
RED
RED
6
1
•
•
ANODE
J807
•
GND
GREEN
RED
•
•
J301
WHITE
BLACK
SENSOR
•
•
J602
RED
WHITE
WIFI
MODULE
•
•
NAVY
BLUE
1
4
1
2
2
1
MAIN BOARD
J403
Non-EMV models: Use
J802 Jumper plug
(if equipped)
(if equipped)
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