ES AWH11-V5+, User Manual

Page: 64 / 86

3. Usage
64
00 E1
Unit working st atue Failure Code Type
Ambient temp. sensor failure
1.Cooling operation is
limited. 2.Cooling and
heating auto-switch is
not available. 3.Unit will
use compressor
discharge temperature as
reference for anti-freezing
protection. 4. Bivalient
function is not available.
Failure
Indoor Unit Failure Codes
00 E2
00 E3
00 E4
00 E5
00 E6
00 E7
00 E8
Sanitary hot water temp. sensor
failure Sanitary hot water mode
is not available.
Check whether sanitary hot water temperature sensor is
open, short-circuit or value drifts too much. Replace it
if necessary.
Heating water temp. sensor
failure
Heating mode is not
available.
Check whether heating water temperature sensor is
open, short-circuit or value drifts too much. Replace it
if necessary.
Cooling water temp. sensor
failure Cooling mode is not
available.
Check whether cooling water temperature sensor is
open, short-circuit or value drifts too much. Replace it
if necessary.
Unit water outlet temp. sensor
failure
Unit stops
Unit stops
Check whether unit water outlet temperature sensor is
open, short-circuit or value drifts too much. Replace it
if necessary.
Unit water inlet temp. sensor
failure
Check whether unit water inlet temperature sensor is
open, short-circuit or value drifts too much. Replace it
if necessary.
System 2 indoor coil temp.
sensor failure
System 2 stops
System 1 stops
Check whether indoor coil temperature sensor of
system 2 is open, short-circuit or value drifts too much.
Replace it if necessary.
System 1 indoor coil temp.
sensor failure
Possible Reasons And Solutions
Check whether ambient temperature sensor is open,
short-circuit or value drifts too much. Replace it if
necessary. For a dual compressor system, ambient
temperature sensor for both compressor systems
need to be replaced as this failure happens only
when both sensors can't give the correct
temperature reading.
For dual compressor system: check whether indoor
coil temperature sensor of system 1 is open,
short-circuit or value drifts too much. Replace it if
necessary. For single compressor system: check
dip-switch number DIP2-1. It should be in OFF
position stands for single compressor system.
00 E9
00 Ea Indoor EEPROM failure
00 Eb Water flow switch failure Compressor stops
Room temp. sensor failure
1.Room temperature
control mode can't be
activated. 2.Room
temperature compensate
function can't be
activated.
Unit keep on working
Check whether room temperature sensor is open,
short-circuit or value drifts too much. Replace it if
necessary.
Reset EEPROM setting. If still not OK, replace the
indoor PCB. Reset EEPROM: Press "reset" button
on indoor PCB when indoor unit is powered, unit
will reset EEPROM automatically. After done, LED
light for indicating the statue of relay "YL" will be
powered. Repower the unit. After EEPROM reset
done, all previous setting done by the operation
panel is erased. Please set all functionsa again.
If water flow switch is in "CLOSE" type when water
pump is not working, unit gives this failure code.
Check whether there has a external circulation pump
circulates the water through heat pump unit when
unit circulation pump is OFF; check wheter water
flow switch is broken so it is always in "CLOSE" mode.