HTM HTW-V5WD2N8 Manual De Usuario E Instalacion página 169

ERROR MALFUNCTION
CODE OR PROTECTION
Water flow failure
Suction temperature
sensor(Th) error
Discharge temperature
sensor(Tp) error
inlet water temperature
sensor(Tw_in) error
The main control board of
hydraulic module EEprom
failure
Communication error between
main control board PCB B and
main control board of
hydraulic module
FAILURE CAUSE
AND CORRECTIVE ACTION
Check that all shut off valves of the water circuit are completely
open.
1. Check if the water filter needs cleaning.
2. Refer to "9.4 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.
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.
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.
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.
1. The EEprom parameter is error, rewrite the EEprom data.
2. EEprom chip part is broken, change a new EEprom chip
part.
3. main control board of hydraulic module is broken, change a
new PCB.
1.wire doesn't connect between main control board PCB B and
main control board of hydraulic module. connect thewire.
2.Communication wire sequence is not right. Reconnect the
wire in the right sequence.
3. Whether there is a high magnetic field or high power
interfere, such as lifts, large power transformers, etc.. To add a
barrier to protect the unit or to move the unit to the other place.
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