2--7
©
2012 Mobile Climate Control
T-348 Rev. 07/2012
Table 2-5. Parameter Codes
CODE
CODE NAME
DESCRIPTION
P1
Return Air
Temperature
This value is the temperature measured by the return air sensor. If the sensor is shorted it
will display
CL.
If it is open circuited it will display
OP
.
P2
Coil Temperature
Not used.
P3
Ambient Temperature
This value is the outside temperature measured by the ambient temperature sensor. If the
sensor is shorted it will display
CL.
If it is open circuited it will display
OP
.
P4
Suction Line
Temperature
Not used.
P5
Suction Pressure
This value is the suction pressure measured by the suction pressure transducer. If the
sensor is shorted it will display
CL
If it is open circuited it will display
OP
.
P6
Discharge Pressure
This value is the discharge pressure measured by the discharge pressure transducer. If
the sensor is shorted it will display
CL
and if it is open circuited it will display
OP
.
P7
Superheat
Not used.
P8
Analog Set Point
Temperature
Not used.
P9
A/C Control Window
#1
This is the number of degrees F above setpoint at which the unloaders will be both ener
gized. This value can be modified between 0 and 10 degrees F. The default value is 1
degree F.
P10
A/C Control Window
#2
This is the number of degrees F above AC control window one at which the first unload
er will be energized. This value can be modified between 0 and 10 degrees F. The default
value is 1 degree F.
P11
A/C Control Window
#3
This is the number of degrees F above AC control window two at which the evaporator
fan speed will be set to low. This value can be modified between 0 and 10 degrees F.
The default value is 1 degree F.
P12
Heat Control Window
This is the number of degrees F below setpoint before the reheat coolantvalve is energi
zed. This value can be modified between 0 and 10 degrees F. The default value is 2 de
gree F for heat and 4 degrees F for reheat.
P13
Compressor Safety Off
Delay
This number is the minimum time in minutes that the compressor must be off after a
high or low pressure alarm before it can be restarted. This value can be modified be
tween one and five minutes. The default value is 1.
P14
Fan Delay
This is the minimum time (in seconds) that the fans must run at a particular speed before
changing to another speed. This value can be modified between one and 60 seconds. The
default value is two seconds.
P15
Reheat Valve Delay
This is the minimum time (in seconds) that the reheat valve must be in a particular state
(open /closed) before changing to another state. This value can be modified between 1
and 60 seconds. The default value is 2 seconds.
P16
Compressor High Pres
sure Switch
This is the current state of the compressor high pressure switch input. “CL” will be dis
played if it is closed and “OP” will be displayed if it is open.
P17
Condenser Fan Speed
Switch
Not used.
P18
Maximum Setpoint
This is the maximum value that the operator will be allowed to set the setpoint tempera
ture. The value can be modified in degrees with the up and down keys to a value be
tween 60
°
F and 80
°
F.
P19
Minimum Setpoint
This is the minimum value that the operator will be allowed to set the setpoint tempera
ture. The value can be modified in degrees with the up and down keys to a value be
tween 60
°
F and 80
°
F.
