Acb (Auxiliary Control Board) Interface; Start-Up; Pre-Start Check; System Operation Check - Carrier 40VMW005 Installation And Maintenance Instructions Manual

ACB (Auxiliary Control Board) Interface —
ACB interface is a dry contact board that can output up to four
signals controlling devices. Refer to Fig. 22 for connecting
devices to the ACB interface board.
ACB interface
AUXH HTON CTON
Example:
Alternative Heat
Auxiliary Heat
Example:
Humidifier
( current range: 0-1A)
( voltage range: 0-24V AC/DC)
MAX AMPS - 1A
MAX VOLTAGE - 24V
LEGEND
ACB — Auxiliary control board
AUXH — Output for auxiliary heat
CTON — Output for cooling operation
FAN — Output for fan operation
HTON — Output for heating operation
Fig. 22 —ACB Interface

START-UP

Pre-Start Check —
Once installation is complete, make
the following pre-start checks:
1. All indoor and outdoor units are properly installed.
2. All piping and insulation is complete.
3. All electrical connections (both power and control) are
properly terminated.
4. All condensate drains are installed correctly.
5. The power supply is of the right voltage and frequency.
6. The units are properly grounded in accordance with
current electrical codes.
7. Suction and liquid line service valves are in open
position.
System Operation Check —
and pre-start checks are completed, follow these steps:
1. Using remote controller, select cooling or heating mode
to check the operation of the system.
2. While the system is in operation, check the following on
the indoor unit:
a. Switches or buttons on the remote controller are easy to
push.
b. Indicator light is showing normal operation and no
error is indicated.
c. Swing mode of air louvers is working (if applicable to
unit).
d. Drain pump operation is normal (if applicable).
e. No abnormal vibration or noise is noticed.
3. While the system is in operation, check the following on
outdoor unit:
FAN
CN2
CN3
Example:
Damper Exhaust
New Fan
Example:
Economizer
Once the installation
a. No abnormal vibration or noise is noticed.
The
b. Condenser fan is in operation.
c. Indicator light is showing normal operation and no
error is indicated.
NOTE: If the unit is turned off or restarted, there is a time delay
of three minutes for the compressor to start from the time the
power is restored.

MAINTENANCE

When servicing or repairing this unit, use only factory-
approved service replacement parts. Refer to the rating
plate on the unit for complete unit model number, serial
number, and company address. Any substitution of parts or
controls not approved by the factory will be at the owner's
risk and may result in equipment damage.
To avoid equipment damage, do not attempt to reuse any
mechanical or electrical controllers that have been wet.
Replace defective controller.
Every 3 Months:
• Check the air filter condition. Clean or replace if
necessary.
Every 6 Months:
Follow 3-month maintenance schedule. In addition:
• Clean condensate tray with suitable cleaning agent.
• Clean the grille and panel.
Every 12 Months:
Follow 6-month maintenance schedule. In addition:
• Be sure all electrical connections are secure.
• Check condensate pump operation.
• Check the heating and cooling action to confirm proper
operation.

INDOOR UNIT ADDRESSING

For proper system operation, each indoor unit must have a
unique address set from 0 to 63. When setting an address by
remote controller; the outdoor units, indoor units, and MDC
must be powered on. If FE is displayed on the LED screen or
display board, this unit has no address. After setting all indoor
unit addresses, turn off the power supply to all indoor units to
clear errors.
Indoor unit addressing can be distributed automatically in the
heat pump system. When dip switch S6 on the outdoor unit's
main PCB board is set to 00 (default set in factory), indoor
units are set for auto-addressing. When powering on for the
first time, it takes six minutes or more to finish auto-addressing
each indoor unit. The heat recovery system cannot accomplish
this function at this time.
Wireless Remote Controller (40VM900001) —
Indoor unit addressing can be performed using wireless remote
controller. When using wireless controller, user must maintain
a line of sight with the receiver on indoor unit. See Fig. 23 for a
description of the buttons on the wireless remote.
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CAUTION
CAUTION