Local Equipment Network; Board Addresses; Touch Pilot Display; Control Module Communication - Carrier AQUAFORCE 30XA080-500 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

DESCRIPTION
Power (24 vac supply)

Local Equipment Network

Circuit A Minimum Load Control
Circuit B Minimum Load Control
Circuit C Minimum Load Control
Pump #1 Starter
Pump #2 Starter
TB1
J2
CH1 CH2
Local Equipment Network —
mitted between modules via a 3-wire communication bus or
LEN (Local Equipment Network). External connection to the
LEN bus is made at TB3.
All boards (except the Main Base
Board Addresses —
Board and Energy Management Module Board) have
8-position DIP switches.
Touch Pilot™ Display —
connections are shown in Table 13. Wiring is shown in Fig. 15.

Control Module Communication

RED LED — Proper operation of the control boards can be
visually checked by looking at the red status LEDs (light-
emitting diodes). When operating correctly, the red status
LEDs will blink in unison at a rate of once every 2 seconds. If
the red LEDs are not blinking in unison, verify that correct
power is being supplied to all modules. Be sure that the Main
Table 12 — Hot Gas Bypass/Pump Board Inputs and Outputs
INPUT/OUTPUT
—
—
MLV-A
MLV-B
MLV-C
PMP1
PMP2
ON
1
TB2 TB3 TB4 TB5 TB6
J3
CH3 CH4 CH5 CH6
Fig. 14 — Hot Gas Bypass/Pump Board
Information is trans-
The Touch Pilot display port
I/O TYPE DISPLAY MODULE POINT NAME
—
—
Solenoid Valve Hot Gas Bypass A Output, HGB.A
Solenoid Valve Hot Gas Bypass B Output, HGB.B
Solenoid Valve Hot Gas Bypass C Output, HGB.C
Contactor Water Exchanger Pump 1, PMP.1
Contactor Water Exchanger Pump 2, PMP.2
LOCATION OF
DIP SWITCH
SERIAL NUMBER
STATUS SIO (LEN)
2
3 4 5 6 7 8
J4
TB7 TB8
CH7 CH8
Base Board (MBB) is supplied with the current software. If
necessary, reload current software. If the problem still persists,
replace the MBB. A red LED that is lit continuously or blink-
ing at a rate of once per second or faster indicates that the board
should be replaced.
GREEN LED — All boards have a green LEN (SIO) LED
which should be blinking whenever power is on. If the LEDs
are not blinking as described check LEN connections for
potential communication errors at the board connectors. See
Input/Output Tables 3-12 for LEN connector designations. A
3-wire bus accomplishes communication between modules.
These 3 wires run in parallel from module to module. The J9A
connector on the MBB provides communication directly to the
Navigator™ display module.
YELLOW LED — The MBB has one yellow LED. The
Carrier Comfort Network
of network communication.
19
CONNECTION POINT
Pin
— HGBP/PMP-J1
11 24 vac
12 Ground
— HGBP/PMP-J9
+ RS485 Port (D+)
G RS485 Port (Gnd)
- RS485 Port (D-)
HGBP/PMP-J2-CH3
HGBP/PMP-J2-CH4
HGBP/PMP-J2-CH5
HGBP/PMP-J2-CH1
HGBP/PMP-J2-CH2
a30-4047
(CCN) LED will blink during times
®
Notation