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Problem Possible Cause(s) What to do
WHEN THE TAP IS OPENED,
THERE IS NO HOT WATER OR THE
HOT WATER TURNS COLD AND
STAYS COLD.
a. The hot water fi xture is not
suffi ciently open to draw the water
through the heater.
b. The unit display is an error code.
c. There is an external recirculation
system installed, or there is a
check valve on the recirculation
return line.
d. Improper sized dip tube.
e. Water heater disconnected from
electrical power.
Check if there is any error code on
the display.
THE WATER IS NOT HOT
ENOUGH.
The temperature is set too low. a. Check unit’s temperature setting.
b. Check for cross plumbing between
cold and hot water lines.
THE WATER IS TOO HOT. The temperature set too high. Check unit’s temperature setting.
CANNOT OPEN DOOR. Door pins locked in place. a. Ensure the door lock is unlocked
b. Ensure the top and bottom door
pins are released by using a small
screwdriver to pry the pins in the
direction of the door opening.
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