Translation from original instructions
Packaged Rooftop
37
We reserve the right to make changes without any prior notice.
UATYA
4P645203-1
5.1 Introduction
The controller is programmed to manage the components of the unit safely, by adjusting their operation as conditions
change with the aim of maintaining uninterrupted service.
Within the scope of this control function, the controller will partially or completely limit operation of the unit when
hazardous conditions are approaching.
A click on this icon gives access to the Alarms menu. If the icon is red, at least one alarm is active; no alarm
is active if it is grey.
The codes with their descriptions for the various conditions that can appear in the alarm menu are given in the next
chapter.
If you notice there are error messages with the unit running and with it stopped, you should promptly inform the
customer support centre and given them the code and the message description and wait for their instructions.
Do not take initiatives before consulting the customer support centre.
5.2 Alarm table
A list of alarm codes with their descriptions is given below.
Code Description
Code Description
AL1
Internal memory error alarm
AL29
Low temperature alarm of return air
AL5
Air flow alarm from differential pressure
transducer
AL30
High temperature alarm of supply air
AL6
Circuit 1 - High pressure alarm from pressure
switch
AL31
Low temperature alarm of supply air
AL7
Circuit 2 - High pressure alarm from pressure
switch
AL32
Temperature limitation activated of supply air
AL10
Circuit 1 - High pressure alarm from
transducer
AL33
Circuit 1 - External ventilation - Thermal
overload alarm
AL11
Circuit 2 - High pressure alarm from
transducer
AL34
Circuit 2 - External ventilation - Thermal
overload alarm
AL12
High humidity alarm of return air
AL35
Supply ventilation - Thermal overload alarm
AL13
Low humidity alarm of return air
AL36
Return ventilation - Thermal overload alarm
AL14
Dirty filters alarm
AL51
Circuit 1 - Compressor 1 - Inverter tripped
AL17
BMS - Communication error alarm
AL52
c.pCOe 1 - Communication error alarm
AL18
Circuit 1 - Compressor 1 - Thermal overload
alarm
AL53
c.pCOe 2 - Communication error alarm
AL19
Circuit 1 - Compressor 2 - Thermal overload
alarm
AL54
c.pCOe 3 - Communication error alarm
AL20
Circuit 2 - Compressor 1 - Thermal overload
alarm
AL55
Incorrect phase sequence alarm
AL21
Circuit 2 - Compressor 2 - Thermal overload
alarm
AL57
Circuit 1 - Compressor 1 - High discharge
temperature alarm
AL26
Temperature limitation activated of return air
AL58
Circuit 2 - Compressor 1 - High discharge
temperature alarm
AL27
Low temperature alarm of external air
AL59
Circuit 1 - Compressor 2 - High discharge
temperature alarm
AL28
High temperature alarm of return air
AL60
Circuit 2 - Compressor 2 - High discharge
temperature alarm
Содержание R-32 rooftop Series
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