Daikin EUWA/Y5-30HB/C(Z), Service Manual

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Overview of Inputs and Outputs ESIE98–06A
3–4 Part 3 – Troubleshooting
3
1
3
4
5
1.2 Overview of Inputs and Outputs of EUWA/Y5-10HB(Z)
Inputs/outputs The following table describes the relation between the wiring diagram symbols and the wiring
connections of chiller types EUWA/Y5-10HB(Z) and also the malfunction (or program) code. 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 con-
nection
terminal Malfunction
(or program)
code
Description
analog input sensor R3T X1/B1-GND
e1
-
a1
inlet water temperature sensor
R4T X1/B2-GND
e2
(
r6
) outlet water temperature sensor
R5T X1/B3-GND
e3
(
r8
) coil temperature sensor
digital input transducer R1P X1/ALL
h1
/
fl
reverse phase protector
S11L+S10L X1/ID1-GND
h1
flow switch pump contact
Q11F X1/ID4-GND
f1
evap. thermostat
K1A X1/ID1-GND
h1
auxiliary relay for high pressure
K4S X1/ID3-GND
c1
/
h1
overcurrent relay+hp=discharge protector
S16T X1/ID4-GND
l1
evaporating temperature thermostat
control
contacts S7S (field) X1/ID2-GND (
h6
) switch for remote cool/heat selection
S9S (field) X1/ID5-GND (
h7
) switch for remote start/stop
S10L (field) X1/ID1-GND (
fl
) flow switch
S11L (field) 75-77 — contact that closes if the pump is working
digital out-
put K1M X2C1/2-NO1 — compressor contactor
YRV1 X2C3/4-NO4 — 4 way valve
KP (field) X2C3/4-NO3 — pump contactor
H1P (field) X2C5-NO5 — indication lamp alarm