Instruction Manual

20
MIT-II - MIT/P - QUADROPAC DUP 500 14/04/2010 - 300015090-001-L
FAIL. PAC V4V xx
4-way valve fault
PAC malfunction
Fault level: temporary
- 4-way valve blocked open or closed
- Reversal of the heating flow and return
- Lack of refrigerant
- Regulator faulty
FAIL. PAC PUMP x
Fault level: Permanent /
temporary
-No water
- Circulating pump breakdown
FAIL.EXT.S.PAC x
Fault level: permanent in hot
mode / temporary in cold mode
- Opening or short circuit on the outside temperature
sensor
FAIL.RET.S.PAC xx
Fault level: Permanent - Opening or short circuit on the water inlet temperature
sensor
FAIL. PAC FLOW S. xx
Fault level:Permanent - Opening or short circuit on the water outlet
temperature sensor
FAIL.BAT.S.PAC x
Fault level:Permanent - Opening or short circuit at the fin tube exchanger
refrigerant temperature sensor
FAIL.EXCH.S.PAC x
Fault level: permanent in cold
mode / temporary in hot mode
- Opening or short circuit of the refrigerant temperature
sensor at the heat exchanger inlet
HGAS S.HP FAIL x
Fault level:Permanent - Opening or short circuit of the refrigerant temperature
sensor at the compressor outlet
FLOW FAIL. 6 x
Fault level:Permanent /
temporary
- Exchanger frozen
FLOW FAIL. 7 x
Fault level:Permanent /
temporary
- Exchanger frozen
FLOW FAIL. 8 x
Fault level: temporary - Exchanger frozen
FAIL.EEPROM CPU x
Error EEPROM CPU - Switch off PAC and start up again
- Change the micro-connect board
FAIL. UNKNOWN x
Fault unknown - Switch off PAC and start up again
- Change the micro-connect board
MC COM.FAIL xx
Communication fault Boiler
Module
BIOS FAIL. x
Wrong Carel box - Replace the box
CONFIG.FAIL. x
Wrong coding resistor / cold
sensor combination
- Check the wiring and the cold sensor
SHUNT/CA FAIL. x
If the contact is open and there
is a communication with the
control panel, the PAC stops
(except ROE-H)
COND. ANTI. F. x
The PAC flow temperature is too
low
- Check that the back-ups are working
DEFROST FAIL. x
-
AIR IN S.FAIL x
- Opening of or short circuit on the air inlet temperature
sensor
HGAS S.FAIL x
- Opening of or short circuit on the hot gas temperature
sensor
EVA.S.HP FAIL x
- Opening of or short circuit on the evaporator
temperature sensor
COND.S.HP FAIL x
-
HP FAIL.: ... x
Fault number if this is not
included in the list
-
Display ROE-II
ROE-H
ROE+
ROE+TH
SOLO
NAPO
ROI+ Installation malfunction/HP or
PAC
Meaning / Cause (listed in order of likelihood)

When a fault is displayed followed by AUTO, this disappears automatically after a few minutes. When the fault displayed is followed by
MANU, it is necessary to reset the HP using the reset button (See section 3.1).