Service manual

3-68
3.10.2.4 d-code:
The d-code shows the current operation state of the unit.
Example d101:
• This code "d101" will be displayed when the total time above set point +1˚C reaches 1 hour.
The code "d102" will then be displayed when the total time above set point +1˚C reaches 2 hours.
Example d-21:
• This code "d-21" will be displayed when the total time below set point –2˚C reaches 1 hour.
The code "d-22" will then be displayed when the total time below set point –2˚C reaches 2 hours.
SP–2˚C
SP–1˚C
SP
SP+1˚C
SP+2˚C
SP+3˚C
t1=6 hours
t
2=4 hours
t
3=2 hours
t
4=2 hours t6=1 hours
t
5=3 hours
Point A
Example : If inside temperature was recorded above graph, controller shows the following "d code"
when user check the code at "point A"
d106 (above setpoint +1˚C for 6 hours)
d204 (above setpoint +2˚C for 9 hours)
d302 (above setpoint +3˚C for 2 hours)
d-22 (below setpoint –2˚C for 2 hours)
d-13 (below setpoint –1˚C for 3 hours)
d-11 (below setpoint –1˚C for 1 hour)
Figure7