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SERVICING
41
DIPSWITCH FUNCTIONS
The MBE air handler motor has an electronic control that
contains an eight (8) position dip switch. The function of
these dipswitches are shown in Table 1.
Dipswitch Number Function
1
2
3
N/A
4
Indoor Thermostat
5
6
7
8
Cooling & Heat Pump CFM
CFM Trim Adjust
Electric Heat
Table 1
CFM DELIVERY
Tables 2, 2A and 3, 3A show the CFM output for dipswitch
combinations 1-2, 5-6 and 7-8.
Model Switch 1 Switch 2 CFM
OFF OFF 1,200
ON
OFF
1,000
OFF
ON
800
ON
ON
600
OFF OFF 1,600
ON
OFF
1,400
OFF
ON
1,200
ON
ON
1,000
OFF
OFF
2,000
ON
OFF
1,800
OFF ON 1,600
ON
ON
1,200
MBE1200
MBE1600
MBE2000
Electric Heat Operation
Table 2
Model Switch 5 Switch 6 CFM
OFF OFF 1,200
ON
OFF
1,000
OFF
ON
800
ON
ON
600
OFF OFF 1,600
ON
OFF
1,400
OFF
ON
1,200
ON
ON
1,000
OFF
OFF
1,600
ON
OFF
1,400
OFF ON 1,200
ON
ON
1,000
Cooling/Heat Pump Operation
MBE2000
MBE1200
MBE1600
Table 2A
Dipswitch 1/2 & 7/8
AEPF 1830
Heat
i
ng
Element
(kw)
1278
UP TO 10 OFF OFF OFF OFF 1100 1210
UP TO 10 ON OFF OFF OFF 890 935
5 OFF ON OFF OFF 700 770
AEPF3036 / 3137 / 4260
Heating
Element
(kw)
1278
UP TO 20 OFF OFF OFF OFF 2050 2150
UP TO 20 ON OFF OFF OFF 1750 1835
UP TO 15 OFF ON OFF OFF 1600 1680
UP TO 10 ON ON OFF OFF 1200 1260
UP TO 10 ON ON OFF ON 1020 1070
Heat Pump
With Backup
Switch
Position
Switch
Position
Switch
Position
Switch
Position
Emergency
Backup
Heat Pump
With Backup
Emergency
Backup
Table 3
Dipswitch 5/6 & 7/8
AEPF 1830
5 6 7 8 Cooling Heat Pump
OFF OFF OFF OFF 1100 1100
ON OFF OFF OFF 800 800
OFF ON OFF OFF 600 600
5 6 7 8 Cooling Heat Pump
OFF OFF OFF OFF 1800 1800
ON OFF OFF OFF 1580 1580
OFF ON OFF OFF 1480 1480
ON ON OFF OFF 1200 1200
ON ON OFF ON 1020 1020
Switch
Position
Switch
Position
Indoor Airflow
Switch
Position
Switch
Position
Indoor Airflow
AEPF3036 / 3137 / 4260
Table 3A
THERMOSTAT “FAN ONLY” MODE
During Fan Only Operations, the CFM output is 30% of the
cooling setting.
CFM TRIM ADJUST
Minor adjustments can be made through the dip switch
combination of 7-8. Table 4 shows the switch position for
this feature.
NOTE: The airflow will not make the decreasing adjustment
in Electric Heat mode.
CFM Switch 7 Switch 8
+10% ON OFF
-15% OFF ON
Table 4