ICM Controls ICM282 User manual

Safety Considerations
Only trained personnel should install or service heating equipment.
When working with heating equipment, be sure to read and
understand all precautions in the documentation, on labels, and
on tags that accompany the equipment. Failure to follow all safety
guidelines may result in damage to equipment, severe personal
injury or death.
Introduction
The ICM282 xed speed furnace control replaces the following
Carrier modules: HK42FZ004, HK42FZ007, HK42FZ008,
HK42FZ009, HK42FZ011, HK42FZ013, and HK42FZ016.
The ICM282 has incorporated LED diagnostics to assist in
troubleshooting. A fault code label is included in this package and
must be installed on the furnace.
Electrostatic Discharge (ESD) Precautions
CAUTION!
Use caution when installing and servicing the furnace to avoid
and control electrostatic discharge; ESD can impact electronic
components. These precautions must be followed to prevent
electrostatic discharge from hand tools and personnel. Following
the precautions will protect the control from ESD by discharging
static electricity buildup to ground.
1. Disconnect all power to the furnace. Do not touch the control
or the wiring prior to discharging your body’s electrostatic
charge to ground.
2. To ground yourself, touch your hand and tools to a clean,
metal (unpainted) furnace surface near the control board.
3. Service the furnace after touching the chassis. Your body
will recharge with static electricity as you shufe your feet or
move around, and you must reground yourself.
4. Reground yourself if you touch ungrounded items.
5. Before handling a new control, reground yourself; this will
protect the control. Store used and new controls in separate
containers before touching ungrounded objects.
6. ESD damage can also be prevented by using an ESD service
kit.
SpecificationsFeatures
Electrical
• Voltage Range: Line (98 to 132 VAC) @ 60Hz
• Ignitor: 5A @ 120 VAC
• Cool Blower: 30A, 2HP, 240 VAC
• Heat: 5A, 1/2 HP, 240 VAC
• Inducer Motor: 4A, FLA-8.0 LRA @ 120 VAC
• Gas Valve: 1.5A @ 30 VAC
• Controls gas valve, ignitor, blower motor, inducer, humidifier
and air cleaner
• Microprocessor-based
• Designed for 100% gas shutoff in case of ignition failure
• Twinning compatible with other ICM282 boards
• Reverse polarity protection
• Secondary brownout voltage protection
• Compatible with 24 VAC standard thermostat
• Provides diagnostic LED to aid in troubleshooting
CAUTION!
Failure to turn off gas and electric supplies can result in
explosion, re, death, or personal injury.
4. For 80% furnaces, remove control access and blower door;
for 90% furnaces, remove outer door assembly and remove
the two screws from blower access panel and set aside.
5. Disconnect thermostat wires and humidier wires (if equipped
with a humidier).
6. Disconnect line voltage, blower, electronic air cleaner wires (if
equipped), and transformer wires.
7. For 80% furnaces, remove retaining screws and remove
furnace control board from bracket; for 90% furnaces, remove
two screws from blower deck that hold the control box
assembly. Lower the control box assembly. Remove retaining
screw(s) from board and remove board from control box
assembly.
8. Remove wiring harness connectors from circuit board.
9. Examine control and control box to check for water stains.
10. Make repairs if any sources of water leakage are found.
Be sure to check humidiers, evaporator coils, and vent
systems in the area of the control.
Step 1: Remove Existing Control
CAUTION!
To service control, and prior to disconnection, label all wires.
Failure to do so may result in wiring errors that can cause
dangerous operation.
1. Turn thermostat to OFF position or set it to the lowest
possible setting.
2. Turn OFF electrical supply to furnace.
3. Turn OFF gas supply to furnace.
ICM282
Fixed Speed Furnace Control Replacement Kit
Replaces: Carrier HK42FZ004, HK42FZ007, HK42FZ008, HK42FZ009, HK42FZ011, HK42FZ013, HK42FZ016

LIA258-2
Step 2: Install the New Control
1. Ground yourself. When handling circuit board, hold it by the
edges.
2. Insert tab(s) of board into the slots of the control box (if
required).
3. Fasten circuit board with retaining screw(s). Install the
included wiring harness adapter to the three connections of
the existing furnace wiring harness.
A. The furnace harness 9-pin connector plugs into the mating
9-pin adapter harness connector.
B. The furnace harness 2-pin connector plugs into the mating
2-pin adapter harness connector.
C. The furnace harness 3-pin connector plugs into the mating
3-pin adapter harness connector.
4. Connect the other end of the included adapter harness to the
new furnace control board.
A. The 11-pin connector connects to PL1 on the furnace
control board.
B. The 2-pin connector (with 2-black wires) connects to PL2
on the furnace control board.
C. The (2) white wires connect to the 115-volt Neutral spade
connections located in front of PL1 on the new furnace
control board.
5. Connect the transformer to the new furnace control board.
A. Blue wire to SEC-2 terminal, located adjacent to the 3 amp
fuse.
B. Red wire to SEC-1 terminal, located adjacent to the 3 amp
fuse.
C. Black wire to PR-1 terminal, located adjacent to PL2.
D. White wire to one of the 115-volt Neutral spade
connections located in front of PL1.
6. Connect the black wire from the furnace auxiliary junction box
to L1 on the new furnace control board (located on the blower
enable relay).
7. Connect the white wire from the furnace auxiliary junction box
to one of the 115-volt Neutral spade connections located in
front of PL1.
8. Connect the blower motor leads to the new furnace control
board.
A. Connect the white blower motor lead to the BLW
connection within the group of 115-volt Neutral spade
connections.
B. Connect the blower motor heat tap to the blower relay
connection marked HEAT.
C. Connect the blower motor cool tap to the blower relay
connection marked COOL.
D. Connect the remaining blower motor leads to SPARE-1
and SPARE-2.
9. Connect all accessory wires.
10. For 90% furnaces, reinstall the control box assembly to the
blower deck using the screws previously removed from the
blower deck.
11. Set blower off delay jumper located on the top-center portion
of the control board. The factory default is set at 120
seconds.
12. Afx the new wiring diagram label over the existing wiring
diagram. Make sure to use the correct label for 80%
(LAPP25) or 90% (LAPP26) furnaces.
13. Do not connect the thermostat wires to the control board until
System Tests are complete.
System Tests
Step 1: Component Self Test
1. Begin component test sequence by ensuring that thermostat
is turned to OFF position and thermostat wires are
disconnected. Turn power ON and manually close the blower
door switch. With a short piece of wire, briey short TEST/
TWIN terminal to Com/24V terminal. The component test
sequence follows:
A. Status LED will ash code and will then turn ON the
inducer motor.
B. Inducer motor will run for the entire component test.
C. Hot surface ignitor will turn ON for 15 secs.
D. Blower motor heat speed will turn ON for 10 secs.
E. Blower motor cool speed will turn ON for 10 secs.
2. Repair, replace, or service any failing components from the
component self test. The gas valve is not energized during
the self test.
3. Turn power OFF.
4. Release the blower door switch.
5. Connect thermostat wires.
6. Install blower door and access door.
7. Turn power ON.
8. Turn gas ON.
Step 2: Flame Sensor Operation
Connect a DC microammeter in series with ame sensor.
Initiate a heat call. After burners ignite and stabilize, measure
ame current. Nominal ame current is between 2.0 and
3.0 microamps DC. If ame current reading is less than 2.0
microamps DC, either replace or remove and clean ame sensor
with a ne grade steel wool. When the ame current falls to 0.5
microamps DC, the furnace control will lock out.
Step 3: System Operation
1. Perform necessary safety checks. Consider ame safety, limit
switch, and vent system.
2. Operate unit through a complete call for heat cycle.
Twinning Instructions
A 3/16” quick connect terminal is provided on the ICM282 control
board for communication between another ICM282 control board
for furnace twinning.
To congure your control boards for twinning:
1. Install each control board according to the installation
instructions.
2. Connect the TWIN terminals together.
3. Connect the 24 VAC common together. (A common ground
between the two furnaces is also required.)
If the 24 VAC supplies to the control are in phase, both furnaces will
turn the blower on and off synchronously and at the same speed.
If the 24 VAC supplies are not in phase, then neither control will
respond to the thermostat commands and the status LED will ash
rapidly.
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com