12-4
CONTROL SYSTEM
SM YBD018 1-A.1 GB
12.1.7
Outdoor Fan Control
12.1.1.1 The following are the speeds types(General Rules):
Speed Controlled
by
High Relay
Low
Triac (27% to 85% effective voltage)
12.1.1.1 OFAN Speed Type
AC Motor (
OFANType
=2)
Triac Relay
Metric
Effective voltage
R.M.S (V%)
Cool
OFMinPercentC
NA
‘A’:
-
Lower
Speed
Heat
OFMinPercentH
NA
‘B’:
-
Higher
Speed
OFNNoiseMaxPercent
NA
‘C’:
-
Protection
Speed
OFNNoiseMaxPercent
NA
‘D’:
(Night Mode Speed)
NightPercent
NA
‘E’:
-
End of Deicer
-
When Compressor changes to off (Ventilation)
-
OMT and OCT fault in heat mode
Off On
Speed Vari
able
‘F’:
-
Test
Mode
Off On
12.1.1.1 OFAN Operation
With keeping the OFAN general rules above in the highest priority, the operation of the OFAN will be
operating as the following:
