mundoclima MUCR-H6 Series, Service Manual

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Electrical Control Function
108 Electrical Control System
1.3.3.2 Indoor fan running rules:
In heating mode, indoor fan can be selected as high, medium, low, auto and silent. The anti-cold- wind
function has the priority.
When the compressor is running, the indoor fan is controlled as below:
Setting fan
speed
Actual fan speed
H
（
=H
）
H+(H+=H+G)
M(M=M)
M+(M+=M+Z)
L(L=L)
L+(L+=L+D)
H-
（
H-=H-G)
M-(M-=M-Z)
L-(L-=L-D)
T1-Td
℃
L
H
M
-
If the compressor stops caused by the room temperature rising, the indoor fan will be forced to run 127
seconds with breeze. During this period, the anti-cold-wind is disabled.
Auto fan action in heating mode:
T1-Td
L
(H+-L)*0.4+L
(H+-L)*0.6+L
H+
(H+-L)*0.8+L
(H+-L)*0.6+L
(H+-L)*0.2+L
1.3.3.3 Defrosting mode
：
Condition of defrosting:
AC will enter the defrosting mode according to the value of temp. of T3 and the value range of temp. change
of T3 and also the compressor running time.
Condition of ending defrosting:
If any one of the following items is satisfied, the defrosting will finish and the machine will turn to normal
heating mode.
----T3 rises to be higher than TCDE1
℃
.
----T3 keeps to be higher than TCDE2
℃
for 80 seconds.
----The machine has run for 10 minutes in defrosting mode.