HTW VAW -AT-O-100VAWE Manuel De L'utilisateur Et D'installation page 80

Water flow
failure
Defrosting
Defrost
indicate
Communication
failure
☆☆☆☆☆☆☆☆☆●
E5
(9 flash 1dark)
☆☆☆☆☆☆☆☆...
(all long flashes)
E8 Bright
1) solar water
circuit water flow
very little or
without water
flow
2) Related
connecting wires
off
3)water pump
failure
4)water flow
switch failure
5) PCB board
failure
33
1) Solar water circuit
fluid infusion and
exhaust
2) Related connecting
wires being
reconnected
3) Change the water
pump
4) Change the water
flow switch
5) Change the PCB
board