28
RSMVQ Technical Guide
TROUBLESHOOTING
LED Diagnostics
Using RSMVQ LEDs to Verify
Operation
The RSMD is equipped with LEDs that can be used to verify
operation and perform troubleshooting. There are LEDs for
communication, operation modes, and diagnostic codes. See
Figure 9, this page,
for the LED locations. The LEDs associated
with these inputs and outputs allow you to see what is active
without using a voltmeter. The LEDs and their uses are as follows:
Diagnostic LEDs
STATUS
- If the software is running, this LED should blink at
a rate of one blink per second.
ALARM (on board)
- If the RSMVQ Module does not receive
communications for more than one minute, this LED will light
up, the relays will turn off, and the analog outputs will go to
0 VDC.
ALARM (above LCD display)
- This red LED will light up and
stay lit when there is an alarm present. The type of alarm will
display on the LCD display. The ALARM LED also blinks when
the expansion valve is initializing at startup.
COMM
- Every time the RSMVQ Module receives a valid E-BUS
request from the VCCX2 Controller, this LED will blink on and
then off, signifying that it received a valid request and responded.
POWER
- This LED will light up to indicate that 24 VAC power
has been applied to the controller.
Binary Input LEDs
BI1
- This green LED will light up when Compressor Status 1
contact is closed.
BI2
- This green LED will light up when Compressor Status 2
switch is closed.
BI3
- This green LED will light up when the Outdoor Coil
Temperature switch is closed.
BI4
- This green LED will light up when the Emergency
Shutdown switch is closed.
Relay LEDs
RLY1 - RLY4
- These green LEDs will light up when the relays
are enabled and will stay lit as long as they are active.
RSMVQ Stepper Motor Valve LED
EXV-1
- This yellow LED will blink to indicate communication
to the Superheat Controller. If the LED is on solid, that indicates
no communication to the Superheat Controller.
EXV-2
- This yellow LED will blink to indicate communication
to the Superheat Controller. If the LED is on solid, that indicates
no communication to the Superheat Controller.
Figure 9: RSMVQ LED Locations
BINARY
INPUT
LEDs
EXV-1
LED
STATUS
ALARM
COMM
POWER
LEDs
RELAY
LEDs
ALARM
LED
EXV-2
LED
AAON P/N: ASM02293
+24
V
A
C
GND
REL
AY
CONT
ACT
RA
TING IS 1
AMP
MAX @ 24
VA
C
CONDENSER 1
COMP 2 ENABLE
COMP 2 HI SPEED
ANALOG OUTPUTS
COMMON
RELAY OUTPUTS
LABEL P/N:
G079120
COND FAN 1
COND FAN 2
GND
24 VAC POWER ONLY
WARNING! POLARITY
MUST BE OBSERVED
OR THE CONTROLLER
WILL BE DAMAGED
CONDENSER 2
+5 V
DISCHARGE TEMP 1
COMP STAT 1
H 1
P
SATURATION TEMP 2
COMP STAT 2
GND
NOT USED
GND
NOT USED
GND
BINARY INPUTS
MODBUS
RSMVQ
www.aaon.com
HEAD
PRESSURE
SENSORS
DUAL
E-BUS
EXP VALVE 1
+5 V
H 2
P
GND
NOT USED
NOT USED
GND
NOT USED
EXP VALVE 2
R+
T-
SH
SHD
T-
R+
SHD
T-
R+
EXP VALVE 3
NOT
INSTALLED
EXP VALVE 4
NOT
INSTALLED
EACH EXP VALVE IS INDIVIDUALLY
ELECTRICALLY ISOLATED
NOT USED
ALARM
UP
DOWN
ENTER
MENU
Summary of Contents for ASM02293
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