Operating instructions

TM 11574A-OI
C-2
6. Turn unit “OFF”
a. Unplug the valve from stepper drive module (4 pin plug) and measure resistance of the valve.
A – B ________
C – D _______
7. Turn unit “ON”
a. During the first 40 seconds check voltage on the plug from the controller (driver module).
A – B ________ VAC
C – D _______ VAC
8. Scroll units only. YES NO
With unit operating in the cool mode (not at set point), Select code 41.
a. Press “ENTER” key to select tIM and set to up to 5 min at 30 sec intervals using arrow keys.
b. Press “ENTER” key to select PCnt and set to “3” using the arrow key then
press “ENTER”
Does suction pressure along with compressor current fall? ___ ___
Return PCnt to “AUTO” using the arrow key and press “ENTER”
c. Press “ENTER” key to select EEV and set to “0” using the arrow key then
press “ENTER”
Does suction pressure along with compressor current fall? ___ ___
Return EEV to “AUTO” using the arrow key and press “ENTER”
d. Press “ENTER” key to select CAP and set to “STANDARD” using the
arrow key then press “ENTER”
NOTE COMPRESSOR CURRENT AND SUCTION PRESSURE
Press arrow key to select “UNLOADED” and press “ENTER”
Does USV energize? ___ ___
Press arrow key to select “STANDARD” and press “ENTER” then
select “ECONOMIZED” and press “ENTER”
Does ESV energize? Does EXV get cold? ___ ___
Return CAP to “AUTO” using the arrow key and press “ENTER”
e. Press “ENTER” key to select Oil and set to “OPEn” using the arrow key
then press “ENTER”
Does oil appear in the oil sight glass? ___ ___
Return Oil to “AUTO” using the arrow key and press “ENTER”
f. Press “ENTER” key to select LIV and set to “OPEn” using the arrow key
then press “ENTER”
Does LIV energize? Does LIV outlet get cold? ___ ___
Return EEV to “AUTO” using the arrow key and press “ENTER”
g. Press “ENTER” key to select bPSV and set to “OPEn” using the arrow key
then press “ENTER”
Does the compressor discharge temperature fall? ___ ___
Return bPSV to “AUTO” using the arrow key and press “ENTER”