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Code
Code Name
P20
Compressor Hours
High
P21
Compressor Hours
Low
P22
Evaporator Hours
High
P23
Evaporator Hours Low This is the number (in hundreds, tens and ones) of hours of operation with the
P24
Maintenance 1 Hour
High
P25
Maintenance 1 Hour
Low
P26
Maintenance 2 Hours
High
P27
Maintenance 2 Hours
Low
P28
Freeze Alarm Setting
P29
Relay Module Voltage
P30
Main Board Software
Version
P31
Display Software
Version
P32
Ki
P33
Kp
P34
Heat Set Point Offset
P35
Default Display Tem-
perature
P40
Enable Hidden Alarm
P41
Fresh Air Damper
P42
Defrost Operation
03/11
Table 2-2. Parameter Codes - - Continued
This is the number of hours of operation that the compressor has run with the
clutch energized in thousands.
This is the number of hours of operation that the compressor has run with the
clutch energized in hundreds, tens and ones.
This is the number (in thousands) of hours of operation with the evaporator
fans energized.
evaporator fans energized.
This is the value of compressor hours high (P20) at which maintenance alarm
#1 will be activated. This value can be modified by the up and down arrow
keys. If both high and low values are zero the alarm is disabled.
This is the value of compressor hours low (P21) at which maintenance alarm
#1 will be activated. This value can be modified by the up and down arrow
keys. If both high and low values are zero the alarm is disabled.
This is the value of evaporator fan hours high (P22) at which maintenance
alarm #2 will be activated. This value can be modified by the up and down ar-
row keys. If both high and low values are zero the alarm is disabled.
This is the value of evaporator fan hours low (P23) at which maintenance alarm
#2 will be activated. This value can be modified by the up and down arrow
keys. If both high and low values are zero the alarm is disabled.
This is the value at which the freeze alarm will be activated. The default value
is 32°F. This value can be modified between 20°F and 40°F in one degree in-
crements by using the arrow keys
This is the voltage being supplied to the relay module.
This is the software version of the logic board.
This is the software version of the display module.
Not used.
Not used.
This value is the offset that can be used to change the points at which the unit
switches between heat and vent in the heat mode. A positive value will raise
the critical temperatures (winter use) and a negative value will decrease the
critical temperatures (summer use).
This value determines what temperature value the driver's display will show as
a default. When the value is OFF, set--point temperature is displayed. When
the value is ON, return air temperature is displayed. This option is only avail-
able in logic module software revisions 1.9 and newer, and drivers display soft-
ware revision 1.3 and newer. Otherwise P35 will not be active and set--point
temperature will only be displayed as default.
This value determines if alarms A33 and A34 are displayed. When the value is
OFF, alarms A33 and A34 will not be displayed. When the value is ON, alarms
A33 and A34 will be displayed.
Not used.
This value determines if the defrost switch will override the Micromate control-
ler. If the parameter is ON the defrost switch will initiate unit defrost whenever it
senses a need for defrosting (the Micromate display will shut off in defrost). If
the parameter is OFF the Micromate display will continue to operate and over-
ride the defrost switch.
2--7
Description
T--356
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