User Guide

ICM
280
6333 Daedalus Drive, Cicero, N.Y. 13039
visit us on the web at: www.icmcontrols.com
800-365-5525 ICM CONTROLS
LII318-1
GOODMAN REPLACEMENT BOARD
NOTE: DISCONNECT ALL ELECTRICAL POWER AND SHUT OFF GAS TO THE FURNACE BEFORE PROCEEDING
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
Verify proper operation after servicing.
REPLACEMENT of B18099-06, B18099-08 and B18099-10 HSI Module with an ICM280 Board
Timing Chart
NOTES
• If the jumper is removed, the control will default to a 150 second
blower off delay in the heating mode
• CAUTION is to be exercised not to bend the metal pins when
changing the time delay from the factory settings
ON Delay OFF Delay
Heat
30 Seconds 90 Seconds
120 Seconds
150 Seconds (Default)
Cool 7 Seconds 60 Seconds
LED ON: No fault
OFF: Gas valve fault detected
# of LED Flashes Represents
1
Ignition failure (after 3 tries and start of soft lockout)
2
Pressure switch stuck closed
3
Pressure switch failed to close
4
Limit switch failed open
5
Flame present with gas valve output off
6
Brownout voltage
7
Fault twinning
Rapid Flashing
Wrong polarity of 120 VAC and Neutral
Status LEDs
• Remove both access panels.
• Cut the white jumper wire between pins 1 and 4 of the 9-pin connector for
GMP and GMPV series units
• Do not cut the white jumper wire for GMPN and GMN series units.
• Remove the edgecard connector and other wires from the existing module
and discard the thermostat wires removed from the board (R, W, and G).
• Remove existing HSI module. Note: Do not damage the nylon standoffs.
• Install the ICM280.
• Reconnect the edgecard connector ensuring good contact.
• Push the 9-pin connector into the ICM280. Note: It can only go one way. Do
not force it.
• Reconnect the supplied thermostat wires.
• Remove the red wire from the 24-volt side of the transformer’s secondary
side. Discard it.
• Remove the blue ground wire from the transformer, but do not
discard it.
• Remove the blue wire from the transformer. Discard it.
• Place the red wire from the 9-pin connector onto 24-volt (hot)
of the secondary side of the transformer.
• Place the blue wire from the 9-pin connector onto common
terminal of the secondary side of the transformer. This wire
has a piggy back terminal.
• Place the blue ground wire, which was previously removed,
onto the common terminal of the transformer.
• Replace both access panel.
• Restore gas and electrical power to the furnace.
• Verify the sequence of operation.
REPLACEMENT of B18099-13 HSI Module with an ICM280 Board
• Remove both access panels.
• Locate the red, white and green thermostat wires (pigtails) where they pass
through the side of the furnance cabinet. Remove and save the wire nuts and
then disconnect the pigtails from the main thermostat wire assembly.
• Disconnect all wires from the HSI module
• Discard the thermostat wires (pigtails) removed from the board (terminals R,
W, and G).
• Remove the existing HSI module from the control panel. Do not damage the
nylon standoffs.
• Carefully remove the standoffs and insert them into the same locations on
the ICM280.
• Install the ICM280.
• Reconnect the 9-pin connector into the ICM280. Note: It can
only go one way. Do not force it.
• Route the red, white and green thermostat wires (pigtails)
supplied with the ICM280 through the side of the cabinet and
then, using the wire nuts saved earlier, reconnect them to the
main thermostat wire.
• Reconnect all other wires to the controls module being careful
to match the wire labels to the thermostat connections.
NOTE: For GMT, GDT, GMTH and GMNT units, disregard the 9-pin connector supplied with the ICM280.
The control is factory set to give a 150 second blower off delay.
In the heating mode, the blower off delay can be used to obtain a
90, 120, or 150 second period by changing the position of the plas-
tic jumper on the ignition control. See drawing below for location of
this jumper
Selecting the Blower Off Delay