Heat Pump Control (A175) Jumpers And Terminals - Lennox XP21 Series Installation Instructions Manual

Heat Pump Control (A175) Jumpers and Terminals

HEAT PUMP CONTROL
Table 3 on page 24 provides additional information concerning jumpers, links, and connections for the heat pump control.
E37
*30
SECOND DELAY
30
0
SECOND DELAY
0
COMPRESSOR SHIFT DELAY
E34
E48
55
DEGREE
TARGET
50
DEGREE
TARGET
45
DEGREE
TARGET
40
DEGREE
TARGET
SECOND−STAGE LOCK−IN TEMPERATURE
JUMPER REMOVED − NO SECOND STAGE LOCK−IN TEMPERATURE.
NOTE
*NO JUMPER
present) for 40ºF. Later produce units will have no jumper by default present
on E48.
Figure 16. Heat Pump Control Connections, Jumper Settings and LED Locations
TWO STAGE
DS11 and DS14
Earlier produce units will have a default factory setting (jumper
LED ALERT CODES
Page 23
E33
TEST PINS (SEE
FIGURE 28 FOR
DESCRIPTION OF
VARIOUS FUNCTIONS)
DS13 and DS15
LED ALERT CODES
E47
100
DEGREE
TARGET
90
DEGREE
TARGET
70
DEGREE
TARGET
*50
DEGREE
TARGET
DEFROST TERMINATION TEMPERATURE
DS12
INDICATES RS−BUS DATA
COMMUNICATION IS ACTIVE.
(COMMUNICATION MODE
ONLY)
W1
CUT FOR HUMIDITROL APPLICATION
(TWO−STAGE UNITS ONLY)
XP21 SERIES