INSTALLATION & OPERATIONS GUIDE | MICROSET 4
© Honeywell LT-MS4IOG Rev. 04 | Revised October 2015
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Field Service mode
Field Service mode enables technicians to query and adjust key operating settings in the Microset 4. In
Field Service mode a technician uses the
LEFT/RIGHT buttons to scroll through variables (one screen for
each variable) and use the
UP/DOWN arrows on the screen to change the setting for that variable.
Field Service mode ends automatically if there is no button activity for 45 minutes.
Table 8 Adjustment Ranges of Field Service Mode Variables
SETPOINT ADJUSTMENT RANGE
Occupied Setpoint Occupied Low Limit Setpoint–Occupied High Limit Setpoint
Occupied Setpoint High Limit 40–99
Occupied Setpoint Low Limit 0–Occupied High Limit Setpoint
Current Cooling Setpoint Not Adjustable
Current Heating Setpoint Not Adjustable
Unoccupied Cooling Setpoint 45–99 °F
Unoccupied Heating Setpoint 44.5–0.5 below Unoccupied Cooling Setpoint
Cooling and Heating Setpoint Offsets 0–20
Override Limit 0–9.5
Cooling Duct Diameter 0–63 if the Microset 4 is connected to a VAV-SD or VAV-DD
Heating Duct Diameter 0–63 if the Microset 4 is connected to a VAV-DD\
Cold Airflow Not Adjustable
Hot Airflow Not Adjustable
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