Controller Operation
Controller Operation
Note:
1 Upon enter to parameter setting menu, “READ” wording will be shown, indicates retrieving the
data from the main board.
2 At menu d1, a password of “16” is required to proceed to menu d2. If the password is incorrect,
system will exit prameter edit mode.
3 At menu d2, a password of “32” is required to proceed to menu d3. If the password is incorrect,
system will exit prameter edit mode.
4 Upon completion of parameter editing, press <SET> button to exit in order for the new settings
to take effect.
2.4.12 Error Display
Should there be error occurred, backlight will turn to red colour. Error display section shows the
conrresponding error code as follow:
Error
Code
Description Remarks
1
Indoor fan failure (power off to reset)
Display error, stop the system for protection
Power off and on to restart. [check motor overload]
2
Indoor return air sensor failure
(auto reset)
Display error, resume upon recovered, default at
26degC [check sensor connection]
3
Indoor coil 1 sensor failure (auto reset)
Display error, system continue to operate,
bypassed anti freeze. [check sensor connection]
4
Indoor coil 2 sensor failure (auto reset)
Display error, system continue to operate,
bypassed anti freeze.[check sensor connection]
5
Indoor coil 3 sensor failure (auto reset)
Display error, system continue to operate,
bypassed anti freeze.[check sensor connection]
6
Indoor coil 4 sensor failure (auto reset)
Display error, system continue to operate,
bypassed anti freeze.[check sensor connection]
7
Outdoor unit 1 power protection,
compressor 1 high/low pressure trip
(manual reset)
Display error, stop the outdoor unit, manual
reset required, should the failure be occurred 5
times consecutively, pressing of “RESET” will
not be able to reset the unit. Needs power off
and on to restart the unit.
8
Indoor coil 1 anti freeze (auto reset)
Display error, Resume upon recovered .
9
Circuit 1 no cooling (power off to reset)
Display error. [check outdoor unit 1]
comp overload trip,
[check coil]
