53
Chapter 7 Troubleshooting
No.
Alarm
Information
Possible cause
Elimination method
3
EPO Active
The EPO button on the
control panel is pressed or
emergency stop is triggered
GXHWR¿UHRUVPRNH
Eliminate the abnormality, manually reset the
unit by pressing the
Ÿź
keys simultaneously
for above 3 seconds and re-start the unit to
recover the normal operation.
Emergency stop is
triggered due to leakage
1) Eliminate the abnormality, make sure the
water leakage detector is dry, and press
the
Ÿź
keys simultaneously for above 3
seconds to recover the normal operation.
2) If the water leakage detector cannot be
dried in a short time, go to
6HWWLQJ ĺ
&RQWUROOHU ĺ/HDN&XW2II
to disable
‘Leak. Cut-Off’
function, and follow the
actions mentioned in 1).
4
Leak Active
Leakage is detected.
Remove the surplus water and inspect the
water level of the condensed water pan.
Inspect if the drain function is normal and
confirm that the condensed water pipe
has no bending, damage or blockage. If
upper piping with condensed water pump
is adopted, the vertical life shall not exceed
¿YHPHWHUV
5
Fire Active
Fire detection is triggered.
Inspect the environment and eliminate the
abnormality.
6
Smoke Active
Smoke detection is
triggered.
Inspect the environment and eliminate the
abnormality.
7
Comm
Abnormal
The CAN-Link port wiring
is wrong or the unit ID is
repeated.
,QVSHFWWKH&$1/LQNSRUWZLULQJDQGFRQ¿UP
that the cooling units connected in series
have independent and non-repeated IDs.
8
Return/ Supply
Sensor
The air return/ supply
sensor is abnormal or in
bad contact.
Inspect the function of the air return/ supply
VHQVRUDQGFRQ¿UPWKHZLULQJLVVWDEOH
9
Remote Sensor
1-4
The # remote sensor is
abnormal or in bad contact.
Inspect the function of the # remote sensor
DQGFRQ¿UPWKHZLULQJLVVWDEOH
10
Water In Sensor
The chilled water inlet
temperature sensor is
abnormal or in bad contact.
Inspect the function of the chilled water inlet
VHQVRUDQGFRQ¿UPWKHZLULQJLVVWDEOH
11
Water Out
Sensor
The chilled water outlet
temperature sensor is
abnormal or in bad contact.
Inspect the function of the chilled water
outlet sensor and confirm the wiring is
stable.
Summary of Contents for HCH1850
Page 64: ...5013217901...
