92 / GB
ERROR
DESCRIPTION
TROUBLESHOOTING
1
14
Outdoor Sensor Damaged
Activation of thermoregulation based on outdoor sensor and outdoor
sensor not connected or damaged
4
20*
Bus supply overload
7
01
Zone1 Send Probe Damaged
7
02
Zone2 Send Probe Damaged
7
03
Zone3 Send Probe Damaged (N/A)
7
11
Zone1 Return Probe Damaged
7
12
Zone2 Return Probe Damaged
7
13
Zone3 Return Probe Damaged (N/A)
7
22
Zone2 Overheat
7
23
Zone3 Overheat
9
02
System flow sensor damaged
Flow sensor not connected or damaged
9
10
HP communication error
- Check the wiring connection of the modbus cable.
- Red led on TDM not blinking-> No comunication, Verify the TDM
and Inverter control boards correct operation
9
23
Low pressure error
Check water leakage of the hydraulic circuit
- Water pressure switch damaged
- Wiring of water pressure switch damaged
9
24
Ebus Communication error between EM and
TDM
- Check wiring connection between TDM end Energy Manager
9
33
Overheat
- Check water flow of the heating circuit
9
34
DHW Tank sensor damaged
- DHW tank sensor not connected or damaged
9
35
Tank overtemperature
- Check 3-way valve (DIV1) blocked in DHW position
9
36
Floor Thermostat 1 error
- Check water circulation of the underfloor zone
9
37
No circulation error
- Check main circulation activation
- Check water flow sensor detection by par. 17.11.3
9
38
Anode Fault
Check anode connection
- Check water presence in the tank
- Check anode status
9
40
Hydraulic scheme not defined
- Hydraulic scheme not selected by parameter 17.2.0
9
41
HIV IN1 not defined
Function not selected by parameter 17.1.0
9
42
HIV IN2 not defined
Function not selected by parameter 17.1.1
9
44
Cooling overtemperature
- Check water flow of the cooling circuit
9
45
Flow switch stuck
Check if main circulation is active before the heat request
- Check the water flow detection by water flow sensor (see par. 17.11.3)
before the heat request
9
46
HP compressor error
Check the compressor frequency after the end of the heat request
using parameter 17.12.1
9
55
Water flow switch
Check the flow temperature sensor and return temperature sensor
placement.
9
58
Buffer temperature sensor
Buffer charge inhibited
9
59
Buffer over-temperature
Buffer charge inhibited
9
70
P2 circulator configuration not aligned with
hydraulics. Check for auxiliary pump configu-
ration
Warning displayed for 30 seconds and stored in the historical
9
71
External unit Version undefined
Warning displayed for 30 seconds and stored in the historical
2
P2
Antilegionella not completed
Antilegionella setpoint temperature not reached in 6 hours
- Check DHW tapping during antilegionella cycle
- Check flow temperature during antilegionella cycle
- Check heating resistors activation
2
P3
DHW boost: comfort setpoint not reached
DHW comfort setpoint not reached during boost cycle.
- Check DHW tapping during boost cycle
- Check flow temperature during boost cycle
- Check heating resistors activation
INTERNAL UNIT ERROR LIST