Technical data

58 i-KI MTD / i-KIR MTD EN 10/2010
MAINTENANCE AND SERVICE
A
TABLE OF REMOTE KEYPAD ALARMS
Alarms displayed on the remote keypad.
Alarm code Cause Solution
A001 BT1 System heat exchanger water inlet temperature probe Probe faulty or disconnected
A002 BT2 System heat exchanger water outlet temperature probe Probe faulty or disconnected
A003 BT8 DHW storage temperature probe Probe faulty or disconnected
A005 BT9 Storage tank temperature probe Probe faulty or disconnected
A006 BT11 Outside air temperature probe Probe faulty or disconnected
A013 F1 High pressure switch
Check connection
Check refrigerant circuit pressure
A019 Difference between low and high pressure in refrigerant circuit too low
Check refrigerant circuit pressure
Check refrigerant charge
A022 Operation outside of limits
Make sure outside air temperature and water tempera-
ture set point are inside the specified operating limits
A025 Differential pressure switch / system flow switch F3 activated
Make sure filters are clean
Check water flow
Check for air in the system
A030 Compressor operating hours reached Scheduled maintenance
A033 System pump operating hours reached Scheduled maintenance
A034 Domestic hot water pump operating hours reached Scheduled maintenance
A035 Mixed zone pump operating hours reached Scheduled maintenance
A036 Fan operating hours reached Scheduled maintenance
A038
System heat exchanger frost prevention alarm Scheduled maintenance
A041
DHW storage temperature too high
A042 Inside frost prevention alarm
A030
Compressor operating hours reached Scheduled maintenance
A033
A034
A035
A036
A038
A041
A054 Legionella prevention alarm
A055 Temperature probe N-THC n.1
Check connections
Probe faulty or disconnected
A056 Address setting error on remote terminal supplied with the unit
Check connections
Check address
A057 Address setting error on expansion module 2
Check connections
Check address, must be 1
A058 Temperature probe in low temperature zone LT2, expansion 2 Probe faulty or disconnected
A063 Address setting error on expansion module 3
Check connections
Check address, must be 2
A064 Temperature probe in low temperature zone LT3, expansion 3 Probe faulty or disconnected
A075 Water temperature too high in mixed circuit, expansion module 1
A077 Water temperature too high in mixed circuit, expansion module 2
A094 End defrost due to maximum time
A095 Temperature probe N-THC n.2
Check connections
Probe faulty or disconnected
A096 Address setting error on zone remote terminal
Check connections
Check address
A097 Temperature probe N-THC n.3
Check connections
Probe faulty or disconnected
A098 Address setting error on zone remote terminal
Check connections
Check address
A099 Temperature probe N-THC n.4
Check connections
Probe faulty or disconnected
A100 Address setting error on zone remote terminal
Check connections
Check address
A101 Temperature probe N-THC n.5
Check connections
Probe faulty or disconnected
A102 Address setting error on zone remote terminal
Check connections
Check address
A103 Address setting error on expansion module 1
Check connections
Check address, must be 1
A104 Low temperature zone LT1 temperature probe, expansion 1 Probe faulty or disconnected
A109 Low pressure alarm from low pressure switch
Check connection
Check refrigerant circuit pressure
A114 Solar/pool module address setting error
Check connections
Check address
A115 Solar/pool module general alarm
A116 Master unit not connected, cascade control
A117 Slave unit not connected, cascade control
A120 Water temperature too high in mixed circuit, expansion module, expansion module 3
A121 Temperature probe N-THC n.6
Check connections
Probe faulty or disconnected
A122 Address setting error on zone LT3 remote terminal
Check connections
Check address
A123 i-KI/i-KIR general alarm - Problems relating to the heat pump
See alarms on the heat pump display and check
these against the table on the following page
A124 Humidity probe N-THC n.1
Check connections
Probe faulty or disconnected
A125 Humidity probe N-THC n.2
Check connections
Probe faulty or disconnected
A126 Humidity probe N-THC n.3
Check connections
Probe faulty or disconnected
A127 Humidity probe N-THC n.4
Check connections
Probe faulty or disconnected
A128 Humidity probe N-THC n.5
Check connections
Probe faulty or disconnected
A129 Humidity probe N-THC n.6
Check connections
Probe faulty or disconnected