AAON RSMD-CM, Technical Manual

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26
RSMD-CM Technical Guide
TROUBLESHOOTING
LED Diagnostics
Using LEDs To Verify Operation
The RSMD-CM 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 5, 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 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 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 - RLY5
- These green LEDs will light up when the relays
are enabled and will stay lit as long as they are active.
Digital Compressor LEDs
COMP1
- This green LED will light up when Digital Compressor
1 is unloading.
COMP2
- This green LED will light up when Digital Compressor
2 is unloading.
GND
TEMP3
TEMP2
TEMP1
TB9
GND
+5V
D12
BIN4
D11
BIN3
D10
BIN2
D9
BIN1
TB12
GND
HP-2
+5V
TB8
GND
J1
C
C
SP-2
+5V
TB6
GND
HP-1
+5V
TB3
POWER
COMM
ALARM
STATU
GND
SP-1
+5V
TB4
YS102632 REV 1
R30
4751
R1
R34
4751
R2
4751
R38
R3
4751
R42
R4
4751
R58
R5
COM
V6
TB7
COMP1
24VAC
P6
COMP2
TB11
AOUT 1
AOUT 2
GND
P2
HH485
R+
GND
T-
TB2
C20 .01uF
I
O
I
O
OMRON G5Q-1A4 DC12V
SA
5A30VDC
CHINA 10A250VAC~
R14
R27 R28
R31 R32
R35 R36
R39 R40
R44 R43
C43 R49 R48
R56 R54
1002 1002 1002
1002 1002 1002
.1uF 1002 1002
.1uF 1002 1002
.1uF 1002 1002
.1uF 1002 1002
.1uF 1002 1002
SERIAL #
ALARM
UP
DOWN
ENTER MENU
AAON P/N: ASM06709
+24
VA
C
GND
RELAY CONTACT
RATING IS 1 AMP
MAX @ 24 VAC
CONDENSER 1
COMP 1
COMP 2
ANALOG OUT
REVERSING VALVE
COMMON
RELAY OUTPUT
TERMINALS
LABEL P/N:
G102070
COND 1
COND 2
GND
24 VAC
POWER ONLY
WARNING!
POLARITY
MUST BE
OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
CONDENSER 2
HEAD PRES 1
+5 V
+5 V
COMP DIS 1
COMP 1
SP-1
HP-1
COMP DIS 2
COMP 2
GND
GND
OA COIL / POWF
EMER SHDN
GND
LEAVING H20
GND
SUCTION PRES 2
HEAD PRES 2
+5 V
+5 V
SP-2
HP-2
GND
GND
R+
SHD
T-
R+ SHD T-
E-BUS DUAL E-BUS
EXPANSION
RSMD-CM
www.aaon.com
SUCTION PRES 1
Figure 5: RSMD-CM LED Locations