List of error codes for the Chaffoteaux Arianext Compact S air-to-water heat pump

List of indoor unit error codes – Chaffoteaux Arianext Compact S

Download the Chaffoteaux Arianext Compact S manual

ERROR CODE		DESCRIPTION	TROUBLESHOOTING
1	14	Outdoor sensor fault	– Activation of weather compensation based on the outdoor sensor. – Outdoor sensor not connected or damaged.
4	20*	BUS power supply overload
7	01	Zone 1 flow sensor fault
7	02	Zone 2 flow sensor fault
7	03	Zone 3 flow sensor fault
7	11	Zone 1 return sensor fault
7	12	Zone 2 return sensor fault
7	13	Zone 3 return sensor fault
7	22	Zone 2 overheating
7	23	Zone 3 overheating
9	02	Flow temperature sensor fault	Flow sensor not connected or faulty
9	03	Return temperature sensor fault	Return sensor not connected or faulty
9	10	Heat pump communication error	– Check the Modbus connection cable – Red LED steadily on -> replace the TDM board
9	23	Heating circuit pressure fault	– Check for water leaks in the hydraulic circuit – Faulty pressure switch – Faulty pressure switch wiring
9	24	No communication with the heat pump	– Check the wiring between the TDM board and the Energy Manager
9	33	Primary circuit overheating	– Check the flow in the primary circuit
9	34	Tank sensor fault	– Tank sensor not connected or faulty
9	35	High tank temperature	– Check whether the 3-way valve is stuck in the DHW position
9	36	Floor thermostat open	– Check the flow in the underfloor heating system
9	37	Circulation error	– Check that the main circulator pump is activated – Check the flow using parameter 17.11.3
9	38	Anode fault	– Check the anode connection – Check for water in the tank – Check the condition of the anode
9	39	Heat pump error **	See the Inverter error list
9	40	Hydraulic diagram not defined	Hydraulic diagram not selected via parameter 17.2.0
9	41	Peak/off-peak hours not defined	Function not selected via parameter 17.1.0
9	42	Load-shedding contact not defined	Function not selected via parameter 17.1.1
9	44	Overheating in cooling mode	Check the flow in the cooling circuit
9	45	Flow switch stuck	– Check whether the main circulator pump is activated before the heat demand – Check the flow against the flow meter value using parameter 17.11.3
9	46	Heat pump compressor fault	Check the compressor frequency after the heat demand ends, using parameter 17.12.1
9	55	Insufficient flow error	Check the flow against the flow meter value using parameter 17.11.3 during the heat demand
2	P2	Anti-bacteria cycle not completed	Thermal disinfection temperature not reached within 6 hours: – Check domestic hot water draw-off during the thermal disinfection cycle – Check the domestic hot water flow during the thermal disinfection cycle – Check that the electric heating element is turning on
2	P3	DHW BOOST function: temperature not reached	– Domestic hot water setpoint temperature not reached during the boost cycle – Check the domestic hot water level during the DHW boost cycle – Check the domestic hot water flow during the DHW boost cycle – Check that the electric heating element is turning on
2	P4	Backup heater thermostat (auto)	– Check that the main circulator pump is activated – Check the flow against the flow meter value using parameter 17.11.3 – Check the condition of the safety thermostat and its wiring
2	P5	Backup heater thermostat (manual)	– Check that the main circulator pump is activated – Check the flow against the flow meter value using parameter 17.11.3 – Check the condition of the safety thermostat and its wiring
2	P6	Night rate not present	Parameter 17.5.2 = HP-HC or HP-HC 40°C and parameter 17.1.0 = absent
2	P7	Pre-circulation error	Flow not detected for 5 minutes during pre-circulation
2	P9	Smart Grid input configuration incomplete error	Only one of parameters 17.1.0 or 17.1.1 is set as the SG Ready input

(*) BUS power supply overload

A BUS power supply overload error can occur when three or more devices are connected within the installed system. Devices that can cause a BUS network overload include:

Multizone module
Solar pump group
Instant domestic hot water production module. To avoid any risk of BUS power supply overload, switch microswitch 1 on one of the electronic boards present in the devices connected to the system (except the boiler) to the OFF position, as shown.

(**) Error code table

The system is protected by internal checks performed by the electronic board, which shuts the system down whenever a malfunction occurs.

List of outdoor unit error codes – Chaffoteaux Arianext Plus S

ERROR TDM	DESCRIPTION	RESET
ERROR TDM	DESCRIPTION	HP POWER OFF	SERVICE RESET
905	Compressor control error	x
906	Compressor control error	x
907	4-way valve control error	x
908	Gas expansion valve control error	x
909	Fan stopped while unit is running	x
947	4-way valve error	x
912	4-way valve error. Turn the system off to clear the fault		x
948	TD sensor error	—	—
949	TS sensor error	—	—
911	TE sensor error	—	—
952	TO sensor error	—	—
913	LWT sensor error	—	—
914	TR sensor error	—	—
916	TEO sensor error	—	—
915	TDM communication error	—	—
953	Compressor oil heater control error	—	—
954	Outdoor unit heating cable control error	—	—
956	Insufficient flow error	—	—
957	Heat pump fan type configuration error	—	—
922	Heat pump frost formation	x
917	“Heat pump frost formation: LWT and/or TR temperature too low. Perform a reset.”	—	x
951	TD overheating error	x
950	TD overheating error. Perform a reset.	—	x
918	Refrigerant recovery cycle error	—	—
919	Condensing temperature too high error	x
931	Inverter Error	—	—

ERROR INVERTER	DESCRIPTION	1ph	3ph
1	Heat sink overheating (INVERTER board)	x	x
2	Compressor IPM Overcurrent		x
3	Fault in the compressor startup sequence		x
4	Compressor current overload	x	x
5	AC power supply phase fault		x
6	Measurement error on IPM Com- pressor current		x
7	Capacitor charging fault		x
8	DC bus overvoltage		x
9	Low DC bus voltage		x
10	Low AC supply voltage		x
11	Supply current overload		x
12	Error measuring supply voltage		x
13	Communication error with the board’s Microprocessor		x
14	Error on the INVERTER board heat sink temperature sensor		x
15	Internal communication error between the board’s microcontrollers		x
16	Communication error between the INVERTER board and the TDM board		x
17	IPM module overheating		x
18	Compressor type error	x	x
19	High-pressure protection triggered	x	x
21	Fan 1 startup failure		x
27	Fan 1 control error	x
29	Fan 2 startup failure		x
35	High-pressure switch protection (shunt on the board)	x	x
36	Low-pressure switch protection (shunt on the board)	x	x
37	Compressor overheat thermostat protection (shunt on the board)	x	x
38	Communication error on the INVERTER board		x
39	IPM Overcurrent	x
40	Compressor startup failure	x
41	Compressor current overload	x
42	IPM current measurement error	x
43	Heat sink overheating	x
44	Low DC bus voltage at startup	x
45	DC bus overvoltage	x
46	Low DC bus voltage	x
47	Low AC supply voltage	x
48	AC supply overvoltage	x
49	Compressor emergency shutdown	x
50	Error measuring supply voltage THIS	x
51	Heat sink temperature sensor error	x
52	Internal communication error between the board’s microcontrollers	x
53	Communication error with the IDU control board	x