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8.3 PCB ERROR CODES
Error Codes On the Remote controllers
When remote controller is installed
The water heater is self diagnostic for safety and convenience when troubleshooting.
If there is a problem with the installation or the unit, it will display an error code on the
remote controller.Consult the following chart for each error code.
Error
code
Fault name Fault definition description Fault reset method
E0 Outlet
temperature
sensor failure
When the system is started or working normally, if
the system detects an open or short circuit of the
outlet temperature sensor, it is determined that the
outlet temperature sensor is faulty
Turn off water flow or
shut down to eliminate
F2 Inlet water
temperature
sensor failure
When the system starts or works normally, if the
system detects that the inlet water temperature
sensor is open or short-circuited, it is determined
that the inlet water temperature sensor is faulty
Turn off water flow or
shut down to eliminate
E1 Unexpected
flameout failure
When the system is in a burning state, when an
unexpected flameout is detected, the valve is closed
within 1 second, then cleaned for 1 second, and
then the ignition valve is re-ignited (the water flow
has not been closed). If the system ceases to fire
unexpectedly again, close the valve within 1 second,
then clean it for 1 second, and then re-ignite the
suction valve to work (the water flow has not been
closed).
If the system detects an accidental flameout for the
third time in a cycle with water flow during startup,
it is judged as an accidental flameout failure
Turn off water flow or
shut down to eliminate
C0 Ignition failure When the system needs to be ignited, it can be
fired up to 8 seconds at a time and 5 times at most.
Before the second, third, fifth, ignition,
the fan needs to be cleaned for 3 seconds,
and before the fourth and seventh ignition, the fan
needs to be cleaned for 8 seconds.
If there is no successful fire 5 times in a row, it is
judged as ignition failure
Turn off water flow or
shut down to eliminate
E2 False flame signal
failure
Before starting the ignition work, the system has
detected the flame signal and judged it as a false fire
fault
Turn off water flow or
shut down to eliminate
C1 Residual fire
failure
When the system is turned on, a flame signal is
detected for 2 seconds from “after closing the valve
to stop burning for 3 seconds” to “before the end
of post-sweeping”, and it is judged as a residual fire
fault
After the shutdown is
eliminated or the water
flow is shut off for 1
second, no flame can
be detected and can
be eliminated.
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