Daikin EUWA/Y5-30HB/C(Z) - Overview of Inputs and Outputs of EUWA;Y15-30 HC(Z)

ESIE98–06A Overview of Inputs and Outputs
Part 3 – Troubleshooting 3–5
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1.3 Overview of Inputs and Outputs of EUWA/Y15-30HC(Z)
Inputs/outputs The following table describes the relation between the wiring diagram symbols and the wiring
connections of chiller types EUWA/Y15-30HC(Z). We refer to the wiring diagram and the PCB layout
to find the exact location on both wiring diagram and switch box:
Type Detail
Wiring diagram
symbol
Wiring connec-
tion terminal
Description
analog input sensor R3T J2/B1 ambient temperature sensor
R4T J2/B2 outlet water temperature sensor evaporator 1
R5T J2/B3 outlet water temperature sensor evaporator 2
R6T J2/B4 outlet water temperature sensor evaporator 3
R7T J2/B5 evap./cond. inlet water temperature
digital input transducer K1A J4/ID1 auxiliary relay for safety circuit 1
K2A J4/ID2 auxiliary relay for safety circuit 2
K3A J4/ID3 auxiliary relay for safety circuit 3
contact S7S (field contacts) J4/ID4 switch for remote cool/heat selection
S8S (field contacts) J3/ID9 switch for dual set point
S9S (field contacts) J3/ID10 switch for remote start/stop
S10L (field contact) J4/ID5 flow switch
S11L (field contact) J4/ID5 contactor that closes if the pump is working
K6A (field contact) J3/ID6 contactor for defrost circuit 1
K7A (field contact) J3/ID7 contactor for defrost circuit 2
K8A (field contact) J3/ID8 contactor for defrost circuit 3
digital output contact K1M J5/C1 compressor contactor for circuit 1
K2M J5/C2 compressor contactor for circuit 2
K3M J6/C3 compressor contactor for circuit 3
LP bypass S16T J6/C4 evaporator temperature thermostat circuit 1
LP bypass S17T J6/C5 evaporator temperature thermostat circuit 2
LP bypass S18T J6/C12 evaporator temperature thermostat circuit 3
K5A (field contact) J24/C13 cool/heat contactor
KP (field contact) J24/C6 pump contactor
H1P (field contact) J24/C7 alarm indication lamp
H2P (field contact) J24/C8 operation indication lamp
transducer K4A J21/ID11 auxiliary relay for reverse phase protector
K12A J22/C9 auxiliary relay for fan speed control Ry1
K13A J22/C10 auxiliary relay for fan speed control Ry2