Daikin EUWAC5FZW [165/264] Safeties overview euwac5 10fzw1

Daikin EUWAC5FZW [165/264] Safeties overview euwac5 10fzw1
Malfunction Indications and Safeties Overview ESIE-0302
3–14 Part 3 – Troubleshooting
3
1
3
4
5
2.4 Safeties Overview: EUWAC5-10FZW1
Safety devices The table below contains an overview of the safety devices.
(1)
: An overview of the fuses and overcurrent relays is given in "Checking the Power Supply and Fuses:
EUWAC5-10FZW1" on page 3–23.
Alarm
description
Alarm
indication
Activation Reset Wiring code Device
Flow switch or
pump contact
fl No flow for 5 s or during a period of
15 s after pump start.
Manual software
reset
S10L Contact closed
on flow
Reverse phase
protector
flh1 Imbalance, reversed or no power
supply
Correct phase
sequence, switch
power back ON
R1P, K4A Contact
ON/OFF
High-pressure
switch
h1 Discharge pressure
> 30.9 bar
Manual software
reset
S1PH, Switch ON/OFF
Low-pressure
switch
l1 Low-pressure ON
Standard: 2.0 bar ± 0.3
ZL/ZH: 1.5 bar ± 0.3
Manual software
reset
S4LP Switch ON/OFF
Outlet water
temp. too low
(freeze-up
protection)
a1 Outlet water temp.
temp. < 2.5°C
temp. < -11.5 °C
temp. < -6.5 °C
Standard
ZL option
ZH option
Manual software
reset
R4T NTC sensor
Discharge ther-
mal protector
h1 Compressor discharge temp.
> 135°C
Manual software
reset and temp.
< 115°C
Q1D Bimetal
ON/OFF
Overcurrent
relay
h1
Overcurrent
(1)
Manual software
reset
K4S Bimetal
ON/OFF
NTC probe of
the inlet water
temperature
e1 Probe is defective Automatic reset R3T NTC sensor
NTC probe of
the outlet water
temperature
e2 Probe is defective Automatic reset R4T NTC sensor
EEPROM on
the controller
PCB
ee ep EEPROM is defective Automatic reset Controller
Communication
error remote
terminal
vn Communication error between the
compact µchiller and the remote
terminal
Automatic reset
Cable
Parameter
H8
Controller

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