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4. USAGE AND OPERATION
2.4 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
2.5 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.
Hold on"
C
MODE
SET
16
"for 5 seconds, the keyboard will be
"
TEMP
IN
TEMP
OUT
Locked
Water inlet temp. Sensor failure
MODE
SET
C
MODE
SET
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