Immergas AUDAX TOP, Instruction And Recommendation Booklet

Page: 31 / 72

31
3.9 ALARMS DESCRIPTION.
The possible causes and likely effects on the unit,
as well as the type of reset, are listed in the alarms
tables below.
Err
or c
od
e
Description Unit state
Reset type
Survey / corrective actions
Aut
om
ati
c
O
per
ati
on
aft
er
a r
es
ta
rt
Comment
1 Return sensor error Continue X
When the values falls in the correct
range again
1. Check the system return sensor.
2. Check the NHC board.
2 Flow sensor error Stop X
When the values falls in the correct
range again
1. Check the system flow sensor.
2. Check the NHC board.
3
Coolant temperature
sensor error (TR)
Stop
compressor
X
When the values falls in the correct
range again
1. Check the TR sensor.
2. Check the NHC board.
4
Outdoor temperature
sensor error
Continue X
When the values falls in the correct
range again
1. Check the external temperature
sensor.
2. Check the NHC board.
5 DHW sensor error DHW failed X
When the values falls in the correct
range again
1. Check the DHW sensor.
2. Check the NHC board.
6
Heat exchanger TEMP
sensor error
X
When the values falls in the correct
range again
1. Check the heat exchanger
TEMPCHW sensor.
2. Check the NHC board.
9 Spare part sensor error Continue X
When the values falls in the correct
range again
1. Check the spare part sensor.
2. Check the NHC board.
10
Compressor discharge
temperature sensor error
(TD)
Stop
compressor
X
After 4 attempts, the error becomes
permanent.
1. Check the discharge temp. sensor
(TD).
11
Air coil temperature
sensor error (TE)
Stop
compressor
X
After 4 attempts, the error becomes
permanent.
1. Check the temp. sensor (TE).
12
Liquid temperature sensor
error (TL)
Stop
compressor
X
After 4 attempts, the error becomes
permanent.
1. Check the temp. sensor (TL).
13
Outdoor temperature
sensor error
Continue X
The unit continues to work in
Integration Mode.
TO sensor value set at 30°C in Heat
Mode and at 10°C in Cool Mode
When the TO sensor detects a
different value, the Integration Mode
is cancelled.
1. Check the outdoor temp. sensor
(TO)
14
Intake temperature sensor
error (TS)
Stop
compressor
X
After 4 attempts, the error becomes
permanent.
1. Check the intake temp. sensor (TS).
15
Inverter dissipator
temperature error
Stop
compressor
X
After 8 attempts, the error becomes
permanent.
1. Verify the correct operation of the
fans
16
TS and TE sensors not
connected properly
Stop
compressor
X
After 4 attempts, the error becomes
permanent.
1. Check the temp. sensor (TE, TS).
17
Intake pressure sensor
error (PS)
Stop
compressor
X
The error becomes permanent after 2
attempts for detecting the
disconnection and after 4 attempts for
the high pressure.
1. Check the intake pressure sensor
(LP).
21
Communication with
inverter interrupted
Stop
compressor
X
When the inverter receives a new
message
22
Communication error
between the inverter
boards
Stop
compressor
X Only delay in communication