11.1.2
Displayed errors
Note
For the coding of the connections, refer to the Electrical wiring diagram.
Note
Contact your service and maintenance engineer if the error persists.
Note
Each error has a code and a description.
Display shows
Error code
Cause
Measure
Relay error
786
Water temperature is sensed to be
rising when there is no water heat-
ing
Recycle electrical power to heater. Re-
place main control board.
Upper sensor er-
ror
787
Upper tank temperature sensor is
not functioning.
Replace upper tank temperature sensor.
Mid-upper sensor
error
788
Mid-upper tank temperature sensor
is not functioning.
Replace mid-upper tank temperature sen-
sor.
Mid-lower sensor
error
789
Mid-lower tank temperature sensor
is not functioning.
Replace mid-lower tank temperature sen-
sor.
Lower sensor er-
ror
78A
Lower tank temperature sensor is
not functioning.
Replace lower tank temperature sensor.
Low voltage error 78B
Power supply voltage is too low.
Check the power supply to the unit and
make sure it is higher than 198 VAC.
Higerror voltage
error
78C
Power supply voltage is too high.
Check the power supply to the unit and
make sure it is lower than 252 VAC.
Dry fire protec-
tion
78D
Not enough water in tank.
Fill unit completely with water. Open a
nearby hot water faucet to permit air in
the system to escape. Close the hot water
faucet when water starts to flow without
air interruptions.
Discharge over
temperature er-
ror
78E
Heat pump discharge temperature is
too high.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
Discharge sensor
error
78F
Heat pump discharge temperature
sensor is not functioning.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
Coil sensor error
790
Coil temperature sensor is not func-
tioning.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
Ambient sensor
error
791
Ambient temperature sensor is not
functioning.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
Suction sensor
error
792
Heat pump suction sensor is not
functioning.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
Low pressure
793
Heat pump low pressure switch is
open.
Contact a qualified installer or service
agency for repair. Refer to phone number
listed on the technical support label loca-
ted on the unit.
n
0336078_CAWH_ENNLFRDE_V1.0, 28-02-2023
67
EN
Содержание CAWH 8-455-12
Страница 8: ...6 Preface EN ...
Страница 14: ...Index 71 12 Table of Contents EN ...
Страница 15: ...User part 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 13 EN ...
Страница 16: ...14 User part EN ...
Страница 18: ...16 User part EN ...
Страница 26: ...24 User part EN ...
Страница 30: ...28 User part EN ...
Страница 31: ...Installation Maintenance and Service part 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 29 EN ...
Страница 32: ...30 Installation Maintenance and Service part EN ...
Страница 42: ...40 Installation Maintenance and Service part EN ...
Страница 78: ...76 Voorwoord NL ...
Страница 84: ...Index 143 82 Inhoudsopgave NL ...
Страница 85: ...Gedeelte voor de gebruiker 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 83 NL ...
Страница 86: ...84 Gedeelte voor de gebruiker NL ...
Страница 88: ...86 Gedeelte voor de gebruiker NL ...
Страница 96: ...94 Gedeelte voor de gebruiker NL ...
Страница 100: ...98 Gedeelte voor de gebruiker NL ...
Страница 101: ...Gedeelte over de installatie en het onderhoud 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 99 NL ...
Страница 102: ...100 Gedeelte over de installatie en het onderhoud NL ...
Страница 112: ...110 Gedeelte over de installatie en het onderhoud NL ...
Страница 114: ...112 Gedeelte over de installatie en het onderhoud NL ...
Страница 150: ...148 Préface FR ...
Страница 156: ...Index 215 154 Table des matières FR ...
Страница 157: ...Partie Utilisateur 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 155 FR ...
Страница 158: ...156 Partie Utilisateur FR ...
Страница 160: ...158 Partie Utilisateur FR ...
Страница 168: ...166 Partie Utilisateur FR ...
Страница 172: ...170 Partie Utilisateur FR ...
Страница 173: ...Partie Installation et entretien 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 171 FR ...
Страница 174: ...172 Partie Installation et entretien FR ...
Страница 184: ...182 Partie Installation et entretien FR ...
Страница 194: ...192 Partie Installation et entretien FR ...
Страница 222: ...220 Vorwort DE ...
Страница 228: ...12 Gewährleistung 283 Index 285 226 Inhalt DE ...
Страница 229: ...Abschnitt für den Benutzer 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 227 DE ...
Страница 230: ...228 Abschnitt für den Benutzer DE ...
Страница 232: ...230 Abschnitt für den Benutzer DE ...
Страница 240: ...238 Abschnitt für den Benutzer DE ...
Страница 244: ...242 Abschnitt für den Benutzer DE ...
Страница 245: ...Abschnitt für die Installation Wartung und Instandhaltung 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 243 DE ...
Страница 246: ...244 Abschnitt für die Installation Wartung und Instandhaltung DE ...
Страница 256: ...254 Abschnitt für die Installation Wartung und Instandhaltung DE ...
Страница 293: ...0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 v AP ...
Страница 299: ...A 5 2 United Kingdom UKCA 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 xi AP ...
Страница 300: ...A 5 3 Nederland xii Appendices Bijlagen Annexes Anhänge AP ...
Страница 301: ...A 5 4 France 0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 xiii AP ...
Страница 302: ...A 5 5 Deutschland xiv Appendices Bijlagen Annexes Anhänge AP ...
Страница 303: ...0336078_CAWH_ENNLFRDE_V1 0 28 02 2023 xv AP ...
Страница 304: ...xvi Appendices Bijlagen Annexes Anhänge AP ...