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8 - CONTROL
8.6 ALARMS
Malfunctions are displayed with the ALARM icon.
Before resetting an alarm, identify and remove the
cause that generated it.
Repeated reset may cause irreversible damages as a system
malfunction.
To reset the alarm in progress :
1. Press the Mode + Clock button for 5 sec.
2. The alarm code is displayed
3. If more alarms are active at the same time, scroll the list
▲ ▼
4. With buttons ▲ ▼ select the alarm reset menu
( resALM )
5. press OK
6. The main screen reappears without the alarm icon
The alarm can be signalled by the thermostat also by a
buzzer.
To disable the buzzer, modify the P200 parameter.
CODE Description
AE01 Alarm of faulty return temp. probe µPC A
AE02 Alarm of faulty supply temp. probe µPC A
AE03 Alarm of faulty outside temp. probe µPC A
AE04 Alarm of faulty coil probe temp. probe µPC A
AE05
Alarm of faulty differential pressure probe of the
supply fan µPC
A
AE06 Alarm of faulty condensing pressure probe µPC A
AE07
Alarm of faulty evaporating pressure probe
µPC
A
AE08 Alarm of faulty return temp. probe µPC A
AE09
Alarm of faulty antifreeze probe temp. probe of
the additional coil µPC
A
AE10 Alarm of faulty air quality probe µPC A
AE11 Alarm of faulty ext. RH probe µPC A
AE12 Alarm of faulty return RH probe µPC A
AE13
Alarm of faulty diff. Detector of the fresh/
ambient air
A
AE14 Alarm of faulty ambient thermostat temp. probe A
AE15 Alarm of faulty ambient thermostat RH% A
AE20 pCOE communication alarm A
AE21 Alarm of the humidifier communication A
AE22 Alarm of ambient thermostat communication A
AE23
Alarm of supply fan overload (cond. fan/pump)
or compartment opening or supply flow alarm
M
AE26 Compressor 1 overload alarm M
AE27 Compressor 2 overload alarm M
AF01 HP alarm of the refrigerant circuit M
AF02 LP alarm of the refrigerant circuit A / M
AF03 HP1 high pressure prealarm A
AF04 LP1 low pressure prealarm A
AF05 HP2 high pressure prealarm A
AF06 LP2 low pressure prealarm A
AA01 Fire alarm M
AA02 Dirty filter warning A
AA03 Resistance high temperature alarm M
AI01 Source water flow-rate alarm A
AI02 Antifreeze alarm of the source exchanger M
AI10 Humidifier alarm group 1 A
AI11 Humidifier alarm group 2 A
LIST OF ALARMS
Cn communication failure thermostat-main board
AE28 Phase monitor alarm M
A = alarm at AUTOMATIC reset
M = alarm at MANUAL reset
A/M = alarm at AUTOMATIC reset, after 3 alarms in 1 hour, it
becomes at MANUAL reset
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