Daikin Altherma EKHBH Series Service Manual page 41

ESIE06-03
A1P Printed circuit board (Main)
A2P Printed circuit board (Remocon)
A3P Thermostat (field supply, PC = internal power
circuit)
E1H Backup heater element 1
E2H Backup heater element 2
E3H Backup heater element 3
E4H Booster heater
F1B Fuse backup heater
F2B Fuse booster heater
FU1 Fuse 3.15 A T 250 V
K1M Contactor backup heater step 1
K2M Contactor backup heater step 2
K3M Contactor booster heater
M1P Pump
Notes
1
2
3
4
5
6
Part 1 – System Outline
M2S
M3S
Q1L
Q2L
Q1DI
R1T (A1P)
R1T (A2P)
R2T
R3T
R4T
R5T
S1L
TR1
V1S
V2S
This wiring diagram only applies to the hydro-box
Use one and same dedicated power supply for hydro-box, outdoor unit and EKSWW
option.
Field wiring
Terminal strip
Connector
Terminal
Protective earth
Do not operate the unit by short-circuiting protection devices Q1L, Q2L, S1L
BLK = BLACK
RED = RED
BLU = BLUE
WHT = WHITE
PNK = PINK
YLW = YELLOW
BRN = BROWN
GRY = GREY
GRN = GREEN
ORG = ORANGE
VIO = VIOLET
Wiring Diagrams
2-way valve for cooling mode
3-way valve: floorheating/sanitary warm water
Thermal protector backup heater
Thermal protector booster heater
Earth leakage protector
Outlet water heat exchanger thermistor
Thermistor (air)
Outlet water backup heater thermistor
Refrigerant liquid side thermistor
Inlet water thermistor
SWW thermistor
Flowswitch
Transformer 24 V for PCB
Spark suppression 1
Spark suppression 2
1
3
4
5
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