10.1. Factory test mode: t
In factory test mode the controller activates the various control board output signals one by one, with
a pause between each step. When the test sequence is complete the controller automatically returns
to normal mode.
10.2. Commissioning mode: c
During commissioning mode delay times are reduced:
• Minimum On-Off time (‘Run’-time) 90 seconds
• Minimum Off-On time (‘Off’-time) 20 seconds
• Minimum On-On time (‘Cycle’-time) 1 minute
• Cooling to heating change-over time 1 minute
• Heating to cooling change-over time 1 minute
Commissioning mode ends automatically after 30 minutes. It is also possible to manually end
commissioning mode either by cycling mains power off and on again, or by again using the
pushbutton and select option ‘c’. When commissioning mode ends the controller returns to normal
mode.
10.3. Compressor selection mode: E
IMPORTANT: Always ensure the correct compressor model is selected!
If an incorrect selection is made it is likely to cause the unit to malfunction and could lead to
permanent damage to the compressor.
10.4. Supply-air temperature control option: Y
OSA + ISD installations can provide automatic control of the supply air temperature. Available
selections are:
• 0: Disable supply air temperature control (default value)
• 1: Enable supply air temperature control