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Evo270-1 Manual
Page 13
7. Troubleshooting
Malfunction
Fault
Display
Reason
Elimination Methods
Bottom water temp. failure
P01
The water bottom temp. sensor is
open or short circuit.
Check or change the water bottom
temp. sensor
Top tank water temp.
failure
P02
The water top tank temp. sensor
is open or short circuit
Check or change the water top tank
temp. sensor
Ambient temp. failure
P04
The ambient temp. sensor is open
or short circuit
Check or change the ambient temp.
sensor
Coil temp. failure
P05
The pipe temp. sensor is open or
short circuit
Check or change the pipe temp. sensor
Refrigerant absorb temp.
failure
P07
The evaporator temp. sensor is
open or short circuit
Check or change the evaporator temp.
sensor
Anti-freeze temp. failure
P09
The anti-freeze temp. sensor is
open or short circuit
Check or change the anti-freeze temp.
sensor
Solar temp. failure
P034
The solar temp sensor is open or
short circuit
Check or change the solar temp sensor
High pressure protection
E01
The exhaust pressure is high,
high pressure switch action
Check high pressure switch and cooling
return circuit
Low pressure protection
E02
The suction pressure is low, low
pressure switch action
Check low pressure switch and cooling
return circuit
Water flow failure
E03
No water or little water in water
system
Water, check for flow volume pump
failure
Electric-heater overheat
protection
E04
Water flow volume not enough,
water system pressure difference
is small
Water, check if the flow volume system
is jammed
Anti-freeze protection
E07
Water flow volume not enough,
water system pressure difference
is small
Water, check if the flow volume system
is jammed
Communication failure
E08
Wired remote control with master
signal failure
Check the connection line between the
wired remote control and mother board
Winter defrost protection
E09
Ambient temperature is too low
Summary of Contents for Evo270-1
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