CLIVET WSAN-YMi 101, Instruction Manual For Installation, Use And Maintenance, Page: 72 / 128

ERROR
CODE
MALFUNCTION OR
PROTECTION
FAILURE CAUSE AND CORRECTIVE ACTION
E7 Tbt1 sensor error
1. The Tbt1sensor connector is loosen. Re connect it.
2. The Tbt1sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The Tbt1sensor failure, change a new sensor.
E8 Water flow failure
Check that all shut off valves of the water circuit are completely open.
1. Check if the water filter needs cleaning.
2. Refer to chapter WATER CONNECTIONS - Charging water
3. Make sure there is no air in the system(purge air).
4. Check on the manometer that there is sufficient water pressure. The water
pressure must be >1 bar.
5. Check that the pump speed setting is on the highest speed.
6. Make sure that the expansion vessel is not broken.
7. Check that the resistance in the water circuit is not too high for the pump (refer
to "Setting the pump speed" ).
8. If this error occurs at defrost operation (during space heating or domestic water
heating), make sure that the backup heater power supply is wired correctly and
that fuses are not blown.
9. Check that the pump fuse and PCB fuse are not blown.
E9
Suction temperature sensor
(Th) error
1. The Th sensor connector is loosen. Re connect it.
2. The Th sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The Th sensor failure, change a new sensor.
EA
Discharge temperature sensor
(Tp) error
1. The Tp sensor connector is loosen. Re connect it.
2. The Tp sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The Tp sensor failure, change a new sensor.
Eb
Solar panel sensor error
(Tsolar)
1. The sensor connector is loosen. Re connect it.
2. The sensor connector is wet or there is water in. remove the water, make the
connector dry. Add waterproof adhesive
3. The sensor failure, change a new sensor.
Ed
Tw_in inlet water temperature
sensor error
1. The Tw_in sensor connector is loosen. Re connect it.
2. The Tw_in sensor connector is wet or there is water in. remove the water, make
the connector dry. Add waterproof adhesive
3. The Tw_in sensor failure, change a new sensor.