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Cool Energy EcoStore Heat Pump Water Heater
24 | P a g e
4.9 Error
If some errors happen, the buzzer will buzz 3 times every other minute. Press for 1 sec to stop
the buzzer but the alarm icon will keep glittering.
When an error is verified, although in some conditions it may function, it cannot reach the expected
efficiency. Please contact the supplier.
4.9.1 Error code shooting table
DISPLAY MALFUNCTION DESCRIPTION CORRECTIVE ACTION
E0
Error of sensor T5U(upper water
temperature sensor)
Maybe the connection between sensor
and PCB has released or sensor has been
broken.
Contact a qualified person to service the
unit.
E1
Error of sensor T5L(lower water
temperature sensor)
Maybe the connection between sensor
and PCB has released or sensor has been
broken.
Contact a qualified person to service the
unit.
E2
Tank and Wired Controller
communication error
Maybe the connection between
controller and PCB has released or PCB
has been broken.
Contact a qualified person to service the
unit.
E4 Evaporator temperature sensor T3 error
Maybe the connection between sensor
and PCB has released or sensor has been
broken.
Contact a qualified person to service the
unit.
E5 Ambient temperature sensor T4 error
Maybe the connection between sensor
and PCB has released or sensor has been
broken.
Contact a qualified person to service the
unit.
E6
Compressor discharge temperature
sensor TP error
Maybe the connection between sensor
and PCB has released or sensor has been
broken.
Contact a qualified person to service the
unit.
E7
Heat Pump system error
If any of P3/P4/P2/P1 continuously
appear 3 times within single heating
cycle, system will consider it as
“Heat
Pump system err
or”
Contact a qualified person to service the
unit.