![background image](http://html.mh-extra.com/html/carrier/39hxc/39hxc_manual_2561930009.webp)
Control active
Indicates the operating status
Operating status
Description
Damper opening
The isolation damper is in the process of opening
Ventilation start-up
The ventilation is in the process of starting up
Control active
The control functions are active
Control limited
Certain control functions are not authorised (e.g.: flow rate insufficient for operation of the
electric heater)
Fan delay
The AHU is in the process of shutting down but the ventilation remains active to cool the
electric heaters
Free cooling
Free cooling is in progress
Outdoor temperature limit
The outdoor temperature is too low for the unit to operate
Heat recovery unit defrost preheat
The heat recovery unit is defrosting.
Lower line (symbol fixed if operation requested but inactive, symbol animated if operation requested and active)
Indicates a "Cooling" request
Indicates a "Heating" request
Indicates the operation of the fan(s)
Indicates the "Air quality" operating mode
2.3.2 - Menus
The user interface is organised according to the menus below (certain menus are only accessible when the access level is 2 or 3 (see
3.18), and when the option is present on the machine):
1 /
Machine status
2 /
Setpoints
3 /
Fault
4 /
Fault memory
5 /
Time schedule
5.1 / Weekly
5.2 / Annually
6 /
Access levels
7 /
Machine parameters (P01 to P99)
8 /
Setting parameters (P100 to P299)
9 /
Read parameters (P300 to P549)
10 / Versions (P550 to P599)
11 /
Fault level (P600 to P699)
12 / Communication
12.1 / BMS1 (P700 to P709)
12.2 / BMS2 (P710 to P719)
12.3 / pLAN (P720 to P729)
13 / Calibration (P800 to P849)
14 / Direction of the inputs/outputs (P850 to P899)
15 / Prioritisation (P900 to P999)
17 / Intake FMA EC motor (P1200 to P1219)
19 / Exhaust FMA EC motor (P2200 to P2219)
21 / Test mode (P3500 to P3599)
22 / Measured values
2 - THE CONTROL PLC
9
Summary of Contents for 39HXC
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