Acson international A5MAC 210D, Техническое руководство

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49
S/N Failure Code Symptom Possible Cause Solution
32
The LED indicator
of the unit displays
ER48 and the
wired controller
displays 48
System 1 heat
exchanger outlet
temperature sensor
faileds
1. TH9 temperature sensor is loosen or
broken off.
Check the control module and replug the
temperature sensor.
2. TH9 temperature sensor is shorted/
open.
Check whether the resistance of TH9
sensor meets specification requirements/
replace if not.
3. Detection circuit for the temperature
sensor in the control module has
malfunctioned.
Replace the control module.
33
The LED indicator
of the unit displays
ER49 and the
wired controller
displays 49
System 2 heat
exchanger outlet
temperature sensor
failed
1. TH10 temperature sensor is loosen
or broken off.
Check the control module and ensure the
temperature sensor is securely connected.
2. TH10 temperature sensor is shorted/
open.
Check whether the resistance of TH10
sensor meets specification requirements/
replace if not.
3. Detection circuit for the temperature
sensor in the control module has
malfunctioned.
Replace the control module.
34
The LED indicator
of the unit displays
ER50 and the
wired controller
displays 50
System 1 suction
temperature
sensor failed
1. TH11 temperature sensor dropped or
not inserted well.
Check the control module and properly insert
the temperature.
2. Short-circuit or disconnected TH11
temperature sensor.
Use the measuring resistance step of a
multimeter to measure and check whether
resistances at two ends of TH11 sensor are
normal/ replaced.
3. Detection circuit problem in the
temperature sensor of the control
module.
Replace the control module.
35
ER51
(unit nixie tube);
51 (wire
controller)
Suction temperature
sensor failure of
system 2
1. TH12 temperature sensor is loosen or
broken off.
Check the control module and ensure
the temperature sensor is securely connected.
2. TH12 temperature sensor is shorted/
open.
Check whether the resistance of TH12
sensor meets specification requirements/
replace if not.
3. Detection circuit for the temperature
sensor in the control module has
malfunctioned.
Replace the control module.
36
The LED indicator
of the unit displays
ER52 and the
wired controller
displays 52
System 2 low
pressure sensor
failed
1. Three cables of low pressure sensor
is connected incorrectly.
Check and reconnect if needed.
2. Low pressure sensor is short circuited
or disconnected.
Repair or replace the low pressure sensor
cables.
3. Low pressure sensor faulty. Replace the low pressure sensor.
4. Detection circuit for the temperature
sensor in the control module has
malfunctioned.
Replace the control module.
37
The LED indicator
of the unit displays
ER53 and the
wired controller
displays 53
System 1 low
pressure sensor
failed
1. Three cables of low pressure sensor is
connected incorrectly.
Check and reconnect if needed.
2. Low pressure sensor is short circuited
or disconnected.
Repair or replace the low pressure sensor
cables.
3. Low pressure sensor faulty. Repair or replace the low pressure sensor
cables.
4. Detection circuit for the temperature
sensor in the control module has
malfunctioned.
Replace the control module.
38
The LED indicator
of the unit displays
ER54 and the
wired controller
displays 54
Memory failure The memory is damaged. Replace the control module.