Daikin EUWL KZW1 Series, Service Manual

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Inputs and Outputs Overview ESIE-0303
3–4 Part 3 – Troubleshooting
3
1
3
4
5
1.2 Inputs and Outputs Overview: EUW5-24KZW1 and EUWL5-24KZW1
Inputs/outputs The table below describes the relation between the wiring diagram symbols, the wiring connections
and the error codes.
For the exact location, see:
■ "PCB Layout of the EUW5-24KZW1 and EUWL5-24KZW1" on page 1–49
■ "Wiring Diagram" on page 1–53.
Type Device
Wiring
diagram
symbol Wiring con-
nection
terminal
Error code Description
Analog
input Sensor R3T X1/B1-GND
e1
-
a1
Inlet water temperature sensor evaporator
R4T X1/B2-GND
e2
(
r6
) Outlet water temperature sensor evapora-
tor
R5T X1/B3-GND
e3
Inlet water temperature sensor condenser
Digital input Trans-
ducer K4S + S1HP +
QID + K5S +
S2HP + Q2D X1/ID3-GND
h1
Overcurrent relay + high pressure switch
+ discharge protector
S4LP/S5LP X1/ID4-GND
l1
Low-pressure switch
Control
contacts S9S (field) X1/ID5-GND (
h7
) Switch for remote start/stop
S7S (field) X1/ID2-GND (
h6
) Switch for remote cool/heat selection
S10L X1/ID1-GND (
fl
) Flow switch
Digital
output — K1M X2C1/2-NO1 — Compressor 1 contactor
K2M X2C1/2-NO2 — Compressor 2 contactor
K1P (field) X2C3/4-NO3 — Pump contactor
Y1R/Y2R X2C3/4-NO3 — Reversing valve
H1P (field) X2C5-NO5 — Indication lamp alarm