CONTROL SYSTEM
SM PNXADCI 1-A.1 GB
12-3
12.1.3.5 Minimum On and Off Time
3 minutes.
12.1.4 Indoor Fan Control
10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5
speeds for heat mode.
When user sets the indoor fan speed to a fixed speed (Low/ Medium/ High), unit will operate
constantly at set speed.
When Auto Fan is selected, indoor unit controller can operate in all speeds. The actual speed is set
according to the cool/heat load.
12.1.4.1 Turbo Speed
The Turbo speed is activated during the first 30 minutes of unit operation when auto fan speed is
selected and under the following conditions:
• Difference between set point and actual room temperature is bigger then 3 degrees.
• Room temperature > 22 for cooling, or < 25 for heating.
12.1.5 Heating Element Control
Heating element can be started if LOAD > 0.8 * MaximumNLOAD AND Indoor Coil temperature <
45.
The heating element will be stopped when LOAD < 0.5 * MaximumNLOAD OR if Indoor Coil
temperature > 50.
12.1.6 Outdoor Fan Control
12.1.6.1 The following are the speeds types(General Rules):
Speed Controlled by
High Relay
Low Triac (27% to 85% effective voltage)
12.1.6.2 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
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