4
USE AND OPERATION INSTRUCTION
4.2.7 KEYBOARD LOCK
To avoid mis-operation, please lock the controller after parameter setting. At the main
interface, press "
press "
" for 5 seconds, the keyboard will be unlocked.
NOTES: When the unit is in alarming state, the key lock can be removed automatically.
4.2.8 MALFUNCTION DISPLAY
There will be a 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:
4.3 PARAMETER TABLE
" for 5 seconds, the keyboard will be locked. When the keyboard is locked,
19
INTER HEAT SMART
50IS / 58IS / 90IS
26IS / 36IS