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4. USAGE AND OPERATION
7
Keyboard lock
To avoid mis-operation, please lock the controller after parameter setting.
At the main interface, press
When the keyboard is locked, press
unlocked.
NOTES: When the unit is in alarming state, the key lock can be removed automaticly.
TEMP
IN
TEMP
OUT
8
Malfunction display
There will be malfunction code showing on the controller screen when relative
malfunction occurs.
You can refer to the malfunction table to find out the failure cause and solution.
For example
for 5 seconds, the keyboard will be locked.
for 5 seconds, the keyboard will be
C
Hold on
MODE
SET
MODE
SET
18
C
TEMP
IN
MODE
TEMP
SET
OUT
Locked
Water inlet temp. Sensor failure
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