Relay Logic; Setting The Indoor Fan Control Mode - Sinclair SCMI-01.4 User Manual

Setting the compressor output limit to activate the relay – Max sp.
This parameter allows you to set the upper output limit of the outdoor unit compressor in % of
its maximum output. If the compressor output exceeds the Max sp. for Delay minutes, the
relay with the Limiting function will be activated. You can set the value from 0.0 to 99.0%
by 1%.
Setting the duration of the condition for changing the relay state – Delay
This parameter allows you to set the period of time in minutes for which the compressor
output must exceed the Max sp. to activate the relay with Limiting function. You can set this
value from 0.0 to 99.0% by 0.1 minutes.

Relay logic

This menu allows you to set the switching logic of the selected relay. Relay switching logic
can be direct or inverse.
Direct
Inverse

Setting the indoor fan control mode

This menu allows you to set the indoor fan control mode or set the fan speed directly using
the FMD-01 module. You must connect this module to the SCMI-01.4 unit via wiring that
connects the corresponding VE+ and VE- terminals on the SCMI-01.4 unit and FMD-01
module.
Fixed
Auto 1
Auto 2
Off
Setting the Constant Fan Speed – Fixed
This menu allows you to set the constant speed of the indoor fan using the additional FMD-
01 module. The speed can be set from 30 to 100% of the maximum fan speed. After setting
the required fan speed, short press the ENTER key to confirm the set value. Then you have
to select the indoor unit fan operation mode. If the Co – compressor is selected, the indoor
fan runs at the set speed only if the outdoor unit compressor is running; if the Fa – fan is
selected, it runs only if the outdoor fan is running; if On is selected, it runs continuously at the
set speed regardless of the outdoor unit operation. Use the ▼/▲ keys to select the desired
mode and long press the ENTER key to save the set outdoor fan speed and mode.
Automatic fan speed control Auto 1
In this option, the indoor unit fan speed is derived from the outdoor compressor speed in the
1:1 ratio. This means, for example, that at 50 percent of the compressor speed, the indoor
fan runs also at 50 percent of its maximum speed.
Automatic fan speed control Auto 2
In this option, the indoor unit fan speed is derived from the outdoor compressor speed at the
preset ratio. The ratio of the indoor fan speed to the outdoor compressor speed can be set
using the USBCommunicator program or using the ▼/▲ keys on the SCMI-01.4 unit
display in the range of 60 to 200 percent. Press the ENTER key to save the set ratio into the
SCMI-01.4 unit.
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The relay contact is closed if relay function is activated (and vice versa)
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The relay contact is opened if relay function is activated (and vice
versa). (This applies only when the module is turned on.)
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Setting the speed and control mode of the indoor unit fan
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The fan speed is controlled according to the compressor speed in the
1:1 ratio
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The fan speed is controlled according to the compressor speed in the
60-200% ratio
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The output to control the indoor fan speed is not used
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