• 28 •
Installation Manual •
MAXIAIR MXP-HPW & HPWI-IOM/1905-E
OPERATIVE LISTS & SUB-LISTS STRUCTURE
Main List
Secondary Lists
Sub-lists
Meaning
A. Unit On/Off
A01 -A02
-
Unit switch on mode / Running
B. Setpoint
B01 - B02
-
Temperature setpoint
C. Clock/Band
C01
-
Current time/day
C02
-
D.S.T. enable
C03
-
Time band set
C04
-
Weekdays
C05
-
Special days
D. I/O Info
D11-D02-D10
-
Analog inputs display
D05-D13
-
Analog outputs display
D14
-
Digital inputs display
D15-D16-D17
-
Digital outputs display
E. Alarm memory
E--
-
Alarm recorder
E. Service level
a. Language set
-
Selectable language
b. Information
Gb01 - Gb02
Info about controller & interface
c. Summer/Winter
Gc01
Forced heating/cooling mode
d. Time counter
Gd01
Fan running time
e. BMS configuration
Ge01 - Ge02
Modbus protocol
f. Service setting
Ga01
Time counter set
Gb01 - Gb02 - Gb03
Sensor balancing
Gc01 - Gc12
Control parameters
H. Manufacturer level
a. Configuration
Ha02 - Ha06
System configuration
b. I/O configuration
Hb02
Digital input configuration
14.6 Defrost mode
This function is only available in heating mode.
It is activated when defrost sensor temperature value (SD), placed downstream winter evaporator, is kept lower than
“Defrost set point” parameter for a min time. In this case, the control leaves the normal operating logic, switches fans off
and reverses refrigeration cycle; this situation will be kept until SD will be higher than “defrost hysteresis” parameter and
for a max time anyway. Control will try to avoid a defrost cycle by switching on the electric pre-heater (if present).
14.7 External positioning of control panel
It’s possible to remove the control panel from its onboard site to an external positioning (for example, in case of difficult
access to the unit). Operate as follows
-
Access to Electrical box, positioning in OFF the switch and opening the panel.
- Remove the two yellow clips at the sides of control.
- Remove the cable
- Remove the control
