10. Troubleshooting
No. Abnormal phenomenon
There is water leakage from
9
the cabinet's bottom.
The remote sensor signals are
10
abnormal.
The three-way ball valve has
11
no response.
Unit is unable to get on-line
12
via the Modbus protocol.
LCD Alarm Information and Troubleshooting:
No. Alarm Information
1
Filter Abnormal
2
Drain Pan Full
3
EPO Active
Leak Active
4
5
Fire Active
6
Smoke Active
7
Comm
Abnormal
8
Return/Supply Sensor
Remote Sensor 1-4
9
Water In Sensor
10
Possible cause
Condensed water is overflowing.
The pipe system leaks.
The cabinet is not on a leveled
base.
The thermal insulating rubber
layer of pipe is damaged.
The remote sensors are not
correctly located.
The actuator is not correctly
connected.
The RS-232 or RS-485 connector
is not correctly connected.
The Baud rate setting is abnormal
or the ID does not match.
Possible cause
The filters are clogged by foreign
matter or are old.
The condensed water pipe or the
condensed water pump is faulty.
Emergency shut off has been
triggered due to leakage.
Leakage is detected.
Fire detection is triggered.
Smoke detection is triggered.
The CAN-Link port wiring is wrong
or the unit ID is repeated.
The air return/supply sensor
is faulty or experiencing a bad
connection.
The # remote sensor is faulty or
experiencing a bad connection.
The chilled water inlet temperature
sensor is faulty or experiencing a
bad connection.
54
Solution
Observe if the water level in the condensed water pan is too
high, inspect the condensed water pump or make sure the
condensed water pipe (not bent, damaged or blocked) is
correctly connected and drainage is normal. If upper piping
with condensed water pump is adopted, the vertical lift should
not exceed 5 m (16 ft.).
Inspect and repair the leaking site.
Use the levelers to level the cabinet.
Inspect and repair the damage.
Inspect each remote sensor's position.
Reset the actuator.
Check the connections.
Re-confirm the Baud rate and ID.
Solution
Clean or replace the filters.
Remove the surplus water, inspect the condensed water
pump or make sure the condensed water pipe (without
bending, damage or blockage) is correctly connected and
drainage is normal. If upper piping with condensed water
pump is adopted, make sure the vertical lift does not exceed
5 m (16 ft.).
1) Ensure the water leakage detector is dry and
simultaneously press the
resume normal operation.
2) If the water leakage detector cannot dry within a short
time, go to Setting g Controller g Leak. Cut-Off to
disable 'Leak. Cut-Off' function and follow the actions
mentioned in 1).
Remove the surplus water and inspect the water level of the
condensed water pan. Inspect if the drain function is normal
and confirm the condensed water pipe is not bent, damaged
or containing blockage. If the upper piping configuration is
used, the vertical lift should not exceed 5 m (16 ft.).
Inspect the environment and eliminate the abnormality.
Inspect the environment and eliminate the abnormality.
Inspect the CAN-Link port wiring and confirm the cooling units
connected in series have independent and non-repeated IDs.
Inspect the air return/supply sensor and confirm the proper
wiring connection.
Inspect the function of the # remote sensor and confirm the
proper wiring connection.
Inspect the function of the chilled water inlet sensor and
confirm the wiring is ok.
keys for 3 seconds to