List of error codes for the Saunier Duval Genia Air Genia Hybrid air-to-water heat pump

List of error codes for the Saunier Duval Genia Air Genia Hybrid air-to-water heat pump

Download the Saunier Duval air-to-water heat pump error code guide

e-bus communication fault with the boiler.

001

Check that the unit is connected to the control box The unit is not connected to the control box.

Check the +/- polarity of the connection.

The cable polarity is reversed. Check that there is no power

The unit is switched off. outage,

that the unit is properly plugged in

and powered.

e-bus communication fault with the heat pump.

002

e-bus communication fault with the hydraulic module.

003

Heating circuit flow temperature sensor fault (open circuit).

010

The sensor is faulty or not properly connected to the control box

or the hydraulic module.

Check the sensor connections.

Check that the sensor’s position and operation are correct.

Check the sensor’s resistance.

Circuit flow temperature sensor fault.

Check the heating sensor’s resistance (short circuit).

011

The sensor is short-circuited.

Low-temperature heating circuit flow temperature sensor fault

(open circuit).

012

The sensor is faulty or not properly connected to the control box.

Circuit flow temperature sensor fault.

Check the low-temperature heating sensor’s resistance (short circuit).

013

The sensor is short-circuited.

Domestic hot water tank temperature sensor fault (open circuit).

014

The sensor is faulty or not properly connected to the control box.

Domestic hot water tank temperature sensor fault (short circuit).

015

The sensor is short-circuited.

Pressure sensor fault.

020

The sensor is faulty or not properly connected to the hydraulic module.

Pressure too low <0.5 bar.

021

There is a leak in the heating circuit. Check for leaks.

Degassing was not done correctly. Bleed the heating circuit. Refill

the system.

Communication fault with the zone 1 wireless room thermostat.

030

The room thermostat is too far from the control box. There is a problem with the room thermostat’s batteries.

Communication fault with the zone 2 wireless room thermostat.

031

Communication fault with the zone 3 wireless room thermostat.

032

Communication fault with the zone 4 wireless room thermostat.

033

Communication fault with the zone 5 wireless room thermostat.

034

Communication fault with the zone 6 wireless room thermostat.

035

Communication fault with the wireless outdoor sensor.	036	The outdoor sensor is too far from the control box.	Check the location of the outdoor sensor. The sensor is powered by a photovoltaic cell. The outdoor sensor does not have a battery that needs replacing.
Fan speed too low (<300 rpm).	037	The fan speed is too low. Lockout fault if this occurs more than 3 times in the last 10 startups.	Check: – fan connections. – main board fuses. – fan grille obstruction. – fan motor.
Compressor suction temperature sensor.	514	Check: – sensor connections. – sensor position and operation.
Compressor discharge temperature sensor.	517
Glycol water circuit return temperature sensor.	519
Glycol water circuit flow temperature sensor.	520	Check: – sensor connections. – sensor position and operation.
Evaporation/condensation temperature sensor.	526
Plate heat exchanger temperature sensor.	528
Glycol water circuit flow too low (<500 l/h) or too high (>1000 l/h). Transient fault.	532	Glycol water circuit flow too low.	Force the pump and check the flow. Adjust the water flow using the pump speed or the hydraulic module’s control valve.
		Glycol water circuit flow too high or incorrect flow reading.	Force the pump and check the flow.
		Insufficient glycol water.	Leak or faulty valve.
		Filter missing or clogged on the glycol water return.	Install a sludge filter. Clean the sludge filter.
		The expansion tank is faulty.	Check the expansion tank pressure. Re-pressurize the expansion tank. Replace the expansion tank.
Glycol water circuit flow temperature too high (>54°C). Transient fault.	534	Sensor faulty or disconnected.	Check: – sensor connections. – sensor position and operation.
		Incorrect water flow reading.	Check for water flow by closing a valve on the glycol water circuit.
		Faulty expansion tank.	Check the expansion tank pressure. Re-pressurize the expansion tank. Replace the expansion tank.
		Filter missing or clogged on the glycol water return.	Install a sludge filter. Clean the sludge filter.
		Air present in the glycol water circuit.	Bleed the glycol water circuit.

Compressor discharge temperature too high (>105°C). Lockout fault.	536	Refrigerant overcharge or undercharge.	Check for overcharge or undercharge.
		Temperature sensor faulty or disconnected.	Check the discharge sensor connections. Check that the sensor’s position and operation are correct. Check the sensor’s resistance.
		Faulty water flow sensor.	Check for water flow by forcing the pump. Refer to the “Heat pump circuit flow adjustment” chapter.
		Pre-expansion on the liquid line (pressure drop).	Check for pinched tubing. Clogged refrigerant filter.
		Faulty electronic expansion valve.	Check – that the motor is properly clipped onto the expansion valve body. – that the electronic expansion valve is working properly. If not: – check the winding resistance. – replace the motor. – as a last resort, replace the electronic expansion valve.
		Poor heat exchange in the plate heat exchanger.	Clean the plate heat exchanger.
		Heat pump temperature too high.	Eliminate the heat source or protect the heat pump.
Compressor discharge pressure too high (> 42 Bar). Lockout fault.	537	Refrigerant overcharge or undercharge.	See solutions for fault 536.
		Faulty pressure switch.	Check the pressures with a gauge, replace the pressure switch.
		Faulty pressure switch contact.	Check the pressure switch.
		Faulty cables.	Check the condition of the pressure switch cables.
		Pre-expansion on the liquid line (pressure drop).	See solutions for fault 536.
		Faulty water flow sensor.	See solutions for fault 536.
		Faulty electronic expansion valve.	See solutions for fault 536.
		Poor heat exchange in the plate heat exchanger.	See solutions for fault 536.
		Heat pump temperature too high.	See solutions for fault 536.

Operation outside the compressor envelope (LP >15 Bar or LP <4.5 Bar

or HP <11 Bar or HP >42 Bar). Transient fault.

554

Refrigerant overcharge or undercharge.

Check for overcharge or undercharge.

Presence of non-condensables.

Non-condensables are present if:

– discharge temperature >90°C (with ambient temperature between 0 and 12°C)

– high HP pressure and normal LP pressure,

– no correlation between pressures and ambient temperature when the compressor has been off for several hours.

Recharge the refrigerant.

Faulty electronic expansion valve.

Check the operation of the electronic expansion valve

– check the winding resistance.

– check how the expansion valve is clipped on. Replace the motor or the entire expansion valve.

Pre-expansion on the liquid line (pressure drop).

Check for pinched tubing.

Poor heat exchange on the plate exchanger.

Check the condition of the plate exchanger.

4-way valve is faulty.

Check the solenoid valve’s power supply. Force defrost mode and check the cycle reversal.

Check the solenoid valve coil. Check the subcooling NTC sensor. Replace the 4-way valve.

Defrost temperature sensor fault.

581

Faulty or disconnected sensor.

Check:

– sensor connections.

– sensor position and operation.

Expansion valve motor fault.

582

Faulty or disconnected motor.

Check the motor and its wiring. Replace the motor.

Exchanger

à plate too low temperature (<0°C).

Erratic fault.

583

Incorrect setting.

Check the control unit’s settings.

Temperature sensor incorrectly positioned.

Check the position of the temperature sensors.

The compressor discharge temperature hasn’t increased (<5k in 2 minutes).

Blocking fault if it occurs 3 times in 4 hours.

584

The compressor isn’t powered.

Check:

– compressor connections and wiring.

– compressor winding resistance. Replace the compressor.

The compressor’s high-pressure sensor is open.

Check:

– that the 4-way valve isn’t stuck.

– that the electronic expansion valve is working properly.

There’s a refrigerant shortage.

Check for a refrigerant charge shortage.

Fault on the compressor discharge temperature sensor.

Check the position and contact of the temperature sensor

at the compressor discharge.

Fault on the pre-expansion temperature sensor.

Blocking fault in cooling mode.

585

Faulty or disconnected sensor.

Check:

– sensor connections.

– sensor position and operation.

Air inlet temperature sensor fault.

774

Faulty or disconnected sensor.