Carrier 38MGR Series - IPM for Four or Five Zone; Main Board

38MGR-04SM Specifications subject to change without notice. 39
DIAGNOSIS AND SOLUTION (CONT)
Fig. 45 — IPM for four or five zone
Fig. 46 — Main Board
The main board LED when power is on and the unit is in standby.
Fig. 47 — Main Board
Check the point button. Press one time to determine how many indoor units are connected.
Pic 2: IPM (For four or five zone
)
Power
Standby