Status Led (Green) - Trane ComfortLink 4TWZ0060A1000A Manual

eLeCTRONIC exPANSION VALVe (eeV) CONTROL BOARd

Status LeD (green)

On - Control has power
Flashing Fast - Control is driving valve (5 seconds max drive time)
Flashing Pattern - See Table 6.
EEV control
Standby
Heat
1st Stage ON
2nd Stage ON OFF
Standby OFF
Cool
1st Stage ON
2nd Stage ON OFF
1 sec
Fault LeD (Red)
LED EEV
Color Fault LED
OFF
1 Flash
2 Flash
3 Flash
4 Flash
5 Flash
Red
6 Flash
7 Flash
8 Flash
9 Flash
10 Flash
EEV not used on all models
(1) Valve will close and LPCO will trip
(2) Power supply will shut down to protect board
Notes:
(3) Monitor superheat and pressure: <3' SH for 5 minutes with valve @ minimum position, Monitor off-cycle
pressure and compare to next on-cycle for pressure drop within 60 seconds
Fault Storing/Clearing:
Faults 6-9 will be stored in non-volatile memory. See Close Valve Test for fault clearing procedure.
Faults 1-5 will clear with a power cycle.
12
TABLE 6
Control Input and Status LED - J6
STATUS LED
ON Continuous
OFF
ON OFF
ON
ON
2 sec
Standby
Coil has an open circuit or intermittent short
Control has detected an internal failure
Suction Pressure Transducer input is out of range
Suction Temperature Sensor input is out of range
Coil has short circuit
(Replace Coil) (2)
The following may require additional diagnostics
Valve is not responding to a position change command
Valve is responding but system is not performing properly
Compressor is not pumping
Low superheat in Cooling Mode
Not used at this time
EEV Fault Codes
ON OFF
ON ON OFF
OFF ON
OFF
OFF
3 sec
Description
(Replace Coil)
(Replace EEV control board)
(Replace transducer) (1)
(Replace sensor) (1)
(Possible stuck valve)
(3)
(Indoor TXV stuck open or ID Fan failure)
Printed from D802247P01 Rev08
OPEN
STATUS LED
(Green)
CLOSE
Fault LED
(Red)
24 VAC at plug J6
B to R
B to R & Y1
B to R, Y1 & Y2
B to R & O
B to R, Y1 & O
B to R, Y1, Y2 & O
4 sec
(Low charge or restriction)