Contact: AIRSYS North America Phone: (855) 874-5380 Page 26 of 29
Email: [email protected] Web: http://airsysnorthamerica.com Rev 1.1
Alarms
When a problem occurs during operation of the unit, the alarm will be expressed by a blinking code on
the main control board. Depending on the severity of the alarm, various components are automatically
shut down. The system will restart most of these devices without human intervention after a defined
delay period. However, manual reset is required when certain alarms occur three times within an hour
(configurable). A description of all system alarms is given below.
Alarm
Code
Blinks
Alarm name
Error action
Recovery time
Fast Slow
1
1
High pressure switch
Stops unit
Mechanical cooling will be locked after three
occurrences. Lockout is reset via power reset or
after 12 hours.
2
2
DC overvoltage
Stops unit
3min
3
3
DC undervoltage
Stops unit
3min
4
4
Overcurrent
Stops unit
3min
5
5
IPM temperature high
Stops unit
3min
6
6
PFC temperature high
Stops unit
3min
7
7
DC overvoltage immediately
stop unit
Stops unit
3min
8
8
DC undervoltage
immediately stop unit
Stops unit
3min
9
9
Compressor steps loss
Stops unit
3min
11
1
1
Current phase loss
Stops unit
3min
12
1
2
Compressor phase loss
Stops unit
3min
13
1
3
FO pull down
Stops unit
3min
14
1
4
FO voltage low level
Stops unit
3min
15
1
5
Current check circuit
Stops unit
3min
16
1
6
Current sensor error
Stops unit
3min
17
1
7
Communication error
Stops unit
3min
21
2
1
Return temperature sensor
error
Alarm will be indicated
without stopping unit
22
2
2
Outside temperature sensor
error
Alarm will be indicated
without stopping unit
23
2
3
Discharge temperature
sensor error
Stops unit
24
2
4
Suction temperature sensor
error
Alarm will be indicated
without stopping unit
25
2
5
Evaporator coil temperature
sensor
error
Alarm will be indicated
without stopping unit
26
2
6
Condenser coil temperature
sensor
error
Alarm will be indicated
without stopping unit
27
2
7
High pressure via sensor
Alarm will be indicated
without stopping unit
28
2
8
Low pressure via sensor
Alarm will be indicated
without stopping unit
29
2
9
Humidity sensor 1 error
Alarm will be indicated
without stopping unit
31
3
1
Humidity sensor 2 error
Alarm will be indicated
without stopping unit