- 60 -
Error number
Errors
Meaning
Main cause of occurrence
13
Load water flow switch
error
When the flow switch is off for 3 seconds when
starting or during operation and this condition
occurs 3 times within one hour, or flow switch
is off for more than 9 seconds.
- Contact defect of a contact point
- Flow switch defect
- Connection defect
- In case where a reset button is not
pressed after occurring a flow switch
error previously
n
Failure diagnosis method
[Note 3]
Unscrew the terminal holder of a board and
make the both ends short like a figure below.
[Note 1]
Since previously occurred error is not removed
in case of not pressing the reset button of HMI, the
error should be removed by pressing the reset button
for sure in case of occurring a flow switch error.
[Note 2]
Please include the flow formation part in the
product.
[Note 4]
Confirm whether or not a flow switch “ON” sig-
nal are occurred normally.
After making a
terminal UI5,G
of a chiller board short,
[Note 3]is a green signal
occurred on a flow switch input
of HMI system status
screen?
[Note 4]
Has the flow switch
error happened before
occurrence? [Note 1]
Is enough flow formed?
[Note 2]
Flow switch replacement
After treating the
error, is it finally removed
by pressing a reset button
of HMI?
Remove the previously
occurred error by pressing
a reset button of HMI
Facility confirmation
request regarding flow
Chiller board replacement
No
No
No
No
Yes
Yes
Yes
Yes
UI5,G Flow S/W
Error code check
