Installation Guide

TROUBLESHOOTING
LED STATUS LAMP
INTERNAL CIRCUIT BOARD
MODE BUTTON:
(PRESS FOR TWO
SECONDS TO TURN
AUDIBLE BEEPER
ON)
PLUMBING CONNECTIONS
BEHIND CIRCUIT BOARD
REQUIRED JUMPERS (2)
TOP OF INTERNAL CIRCUIT BOARD
OPEN PINS (3)
BACK OF CASE
LEAK SENSOR
Figure 8 .
Flash Code
Sequence
Description Action / Solution
1-8 Leak detected. Shut o all power to the water heater. Check for water leaks. Correct any leaks
found. Dry the leak sensor (Figure 8), then dry the circuit board completely before
restoring power.
2-1 Tank is not full of water. Ensure that the heater is  lled with water and that there is no air trapped inside.
Make sure that the back  ow preventer or check valve is opera ng properly and is
 lled and there are
no leaks, connect level detect spades on the circuit board to ground. If the code
is accompanied by a clicking sound that is present when water is running, check
the elements.
3-4 Cri cal error (displayed when other
errors are triggered)
Follow the Ac on/Solu on for the other errors that are displayed.
3-6 Freeze Warning (T-In thermistor
detects that incoming water is lower
than 40°F). This error may also
occur when an open thermistor is
detected.
1. Check wiring to the T-In thermistor. Ensure that the T-In thermistor is not faulty.
2. If incoming water is below 40°F, Turn o power to the water heater, close o
its water supply, then drain the water heater. Wait un l the incoming water is
above 40°F, then restore service.