AQUAHEAT ASC 110, User Manual

Page: 18 / 31

16
hello@aquaheataustralia.com.au 1300 383 815
Protection & Failure code
Display
Protection code
description
Where is the error code
located
Solution
E1 High pressure protection
High pressure switch Check the connection of high
pressure switch, might to replace
it if it’s damaged
E2 Low pressure protection
Low pressure switch Check the connection of low
pressure switch, might to replace
it if it’s damaged
E3 No water protection Low water flowrate Check the water flow
E4
3 phase sequence
protection (three phase
only) Electrical power connection Check the power connect
E5
Power supply excesses
operation range
Electricity network 1. Recover when back to the
normal power
2. Replace PCB
E6
Insufficient water flow
protection
Excessive temp difference
between inlet and outlet
water Rise the water flowrate
E7
Water outlet temp too
high or too low protection Ambient environment Wait for the water heat up or stop
heating
E8
High exhaust temp
protection
Compressor overheating Check if refrigerant gas is
leaking, check the connection of
the sensor.
EA
Evaporator overheat
protection (only at
cooling mode) Evaporator Wait for cooldown
Eb
Ambient temperature too
high or too low protection Ambient environment Wait for the environment back to
application range
Ed Anti-freezing reminder Not failure Wait for recover
P0
Controller
communication failure Controller Check the controller connection
or replace it if it’s damaged
P1
Water inlet temp sensor
failure Water inlet temp. sensor
malfunction Check the connection or replace
if it’s damaged
P2
Water outlet temp sensor
failure Water outlet temp. sensor
malfunction Check the connection or replace
if it’s damaged
P3
Gas exhaust temp
sensor failure Gas exhaust temp sensor
malfunction Check the connection or replace
if it’s damaged
P4
Evaporator coil pipe
temp sensor failure Evaporator coil pipe temp
sensor malfunction Check the connection or replace
if it’s damaged
P5
Gas return temp sensor
failure Gas return temp sensor
malfunction Check the connection or replace
if it’s damaged
P6
Cooling coil pipe temp
sensor failure Cooling coil pipe temp
sensor malfunction Check the connection or replace
if it’s damaged