Electra PXD912 Service Manual page 98

CONTROL SYSTEM
11.14.1 Time Adjustment in SLEEP Mode
In 10V4, the user can make use of the Off-Timer to extend the Sleep Time from 7
hours to 12 hour (max). The operation of the new "Extended Sleep Mode" is illustrated
by the graphs below.
Case 1 is the Standard Sleep Mode, which is the only sleep mode in the previous
version of MCU. The A/C unit simply works for 7 hours, then goes to SB.
Case 2 is the new Extended Sleep Mode. If an active Off-Timer is set to turn off the
A/C between 7-12 hour, relative to the starting of Sleep, the Sleep time is extended.
And, instead of going to SB at the 7th hour, the A/C will work until reaching the Off-
time.
Case 3 is an exception to case 2. The Sleep Mode will not be extended to the Off-
Time when the Off-Timer is preceded by an On-Timer, which is also between 7-12
hour.
Case 1 : Standard Sleep Mode
Condition : Off-timer is not set or is beyond 12 hour.
Oper
SB
Start
Sleep
Case 2 : Extended Sleep Mode
Condition : Off-timer is set at 7-12 hour.
Oper
SB
Start
Sleep
Case 3 : Exception to Case 2
Condition : Off-timer is set at 7-12 hour
Oper
SB
Start
Sleep
11-32
2 4
2 4
On-timer is set at 7-12 hour and before Off-timer
2 4
CONTENT
6 7 8 10
6 7 8 10
6 7 8 10
On-timer
Time [Hr]
12
Time [Hr]
12
Off-timer
Time [Hr]
12
Off-timer
SM PXD 1-E.3 GB