Fisher FSAI-SU-90AE2 Service Manual page 33

Auto fan action in heating mode:
7.4.3.4 Defrosting mode
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.
During the defrosting mode, the compressor keep running, indoor and outdoor motor will stop, defrost
lamp of the indoor unit will be lighted "
7.4.3.5 Evaporator coil temperature protection
When evaporator temperature temp. is more than the setting protection value, the compressor will
Setting fan
T1-Td+ΔT℃
speed
H
M
L
T 1 - T d + ¦ ¤ T
." Will be displayed.
Decrease
Hold
Resume
Actual fan speed
H-（H-=H-G)
H（=H）
H+(H+=H+G)
M-(M-=M-Z)
M(M=M)
M+(M+=M+Z)
L-(L-=L-D)
L(L=L)
L+(L+=L+D)
Off
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