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3-Way Valve
ESIE09-08A
274
Appendix
7.2
Troubleshooting Overview 3-Way Valve
Symptom
Possible cause
Check
Space heating circuit temperature
rises when unit is operating in
DHW.
DHW temperature rises when unit
is operating in space heating.
The 3-way valve sleeve is not
positioned correctly.
Verify if 3-way valve motor and
body are installed correctly (see
page 276).
Unit is working in space heating
mode but 3-way valve is positioned
in DHW mode (right instead of left
position).
Unit is working in DHW mode but
3-way valve is positioned in space
heating mode (left instead of right
position).
The 3-way valve motor is
incorrectly wired to the indoor unit.
Jumpers settings on the 3-way
valve motor PCB are incorrect.
Verify if 3-way valve motor is
wired and set up correctly (see
page 276).
3-way valve motor does not turn.
The 3-way valve motor is
incorrectly wired to the indoor unit.
The indoor main PCB is broken.
The 3-way valve motor is broken.
Verify if 3-way valve motor is
wired and set up correctly (see
page 276).
Verify if the hydrobox sends out
the right signal to the 3-way valve
(see page 277).
Summary of Contents for ALTHERMA HT ERSQ 011 AA
Page 2: ......
Page 7: ...ESIE09 08A Table of Contents v 1 3 Service Tools 283 Index i Drawings Flow Charts iii...
Page 16: ...Model Names of Indoor Outdoor Units Tanks ESIE09 08A 4 General Information...
Page 28: ...Refrigerant Circuit ESIE09 08A 16 Refrigerant Circuit EKHBRD 011 014 016 AB AC V1 Y1...
Page 40: ...Functional Parts Layout ESIE09 08A 28 Refrigerant Circuit...
Page 63: ...ESIE09 08A PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 Refrigerant Circuit 51...
Page 64: ...PCB Layout for EKHBRD 011 014 016 AA AB AC V1 Y1 ESIE09 08A 52 Refrigerant Circuit...
Page 125: ...ESIE09 08A Field Setting Test Operation 113...
Page 232: ...Troubleshooting by Indication on the Remote Controller ESIE09 08A 222 Troubleshooting...
Page 237: ...ESIE09 08A Piping Diagrams Appendix 227 EKHBRD 011 014 016 AB AC V1 Y1...
Page 250: ...Wiring Diagrams ESIE09 08A 240 Appendix EKHBRD 011 014 016 AB AC V1...
Page 251: ...ESIE09 08A Wiring Diagrams Appendix 241...
Page 256: ...Wiring Diagrams ESIE09 08A 246 Appendix EKHBRD 011 014 016 AB AC Y1...
Page 257: ...ESIE09 08A Wiring Diagrams Appendix 247...
Page 260: ...Wiring Diagrams ESIE09 08A 250 Appendix...