Airwell HAF 12, Руководство по обслуживанию

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12-4
CONTROL SYSTEM
SM HAFRPM 1-A.3 GB
12.4 General functions
12.4.1 COMP operation
For each Mode including POWER OFF & SB, a Min time delay of 3 min
before COMP restarting, excluding DEICING Mode
The Min operation time of COMP under different operating conditions is
Operation Mode
Min operation time of
COMP
Heat, Cool or Auto Modes 3 min.
Fan, Dry, Overflow, Protection modes, or mode change ignored
12.4.2 IFAN operation
 
Min time interval between IFAN speed change in AUTOFAN Mode, is 30 sec.
 
Min time interval between IFAN speed change in H/M/L Mode is 1 sec.
 
IFAN speed in Heat/Cool Autofan Mode is determined according to the following table:

T IFAN Speed

T

2 HIGH
2
 
T

1 MED
1
 
T LOW
where in Heat Mode:

T = SPT-RT
in Cool Mode:

T = RT-SPT
Note:

In Heat Mode, the rules in section 4.0.3 have the higher priority.

The table above can be represent by a hysteresis curve which
will minimize the switching of the IFAN relay and will minimize the
change in IFAN speed:
T [
o
c]
L
M
H
IFAN speed
3 2 1
12.4.3 OFAN operation

Min time interval between OFAN ON/OFF state change is 30 sec.

In general, OFAN starts together with COMP.
12.4.4 HE operation

Minimum Heaters ON or OFF time is 30 sec.

Heaters can be activated only if IFAN is on.
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