47
See Fig. 64, a brief Troubleshooting Guide.
For 2--Stage Variable Speed ECM Controls the stored status
codes will NOT be erased from the control memory, when 115--
or 24 --v power is interrupted. The control will store up to the last
7 Status Codes in order of occurrence.
1. To retrieve status codes, proceed with the following:
NOTE: NO thermostat signal may be present at control, and all
blower--OFF delays must be completed.
a. Leave 115--v power to furnace turned on.
b. Remove outer access door.
c. Look into blower access door sight glass for current
amber LED status. Removing blower access door will
open blower access door switch and terminate 115-- v
power to control so that status code is not displayed.
d. Remove blower access door.
NOTE: The Status Codes cannot be retrieved by disconnecting
the limit switch or draft safeguard switch. To retrieve Status
Codes, follow the procedure below.
2. Turn Setup Switch, SW1--1 “ON.”
3. Manually close blower access door switch.
4. Control will flash up to 7 Status Codes.
5. The last Status Code, or 8th Code, will be Code 11.
6. Turn SW1--1 “OFF.”
7. A continuously--lit Amber LED will appear and indicates
proper operation.
8. Release blower access door switch, install blower access
door and replace outer door or refer to the SERVICE label
on the front of the blower access door for more informa-
tion.
Component Self--T
est
Component Test can ONLY be initiated by performing the
following:
1. Remove outer access door.
2. Remove blower access door.
3. Remove the wire from the “R” terminal of the control
board.
4. Turn Setup Switch, SW--1--6 “ON.”
5. Manually close blower access door switch.
Blower access door switch opens 115-- v power to control. No
component operation can occur unless switch is closed. Caution
must be taken when manually closing this switch for service
purposes.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
or death.
Blower access door switch opens 115 --v power to furnace
control. No component operation can occur unless switch is
closed. Exercise caution to avoid electrical shock from
exposed electrical components when manually closing this
switch for service purposes.
!
WARNING
6. Component Test sequence will function as follows:
a. Inducer motor starts on high--speed and continues to
run until Step (d.) of component test sequence.
b. Hot surface igniter is energized for 15 sec, then deen-
ergized.
c. Blower operates for 10 sec, then turns off.
d. Inducer motor goes to low-- speed for 10 seconds, then
turns off.
e. After component test is completed, one or more status
codes (11, 25, or 41) will flash. See component test
section of service label for explanation of status codes.
NOTE: To repeat component test, turn setup switch SW1 --6 OFF
then back ON.
f. TurnsetupswitchSW1--6OFF.
7. RELEASE BLOWER ACCESS DOOR SWITCH, reat-
tach wire to “R” terminal on furnace control board, replace
blower access door, and replace outer access door.
CARE AND
MAINTENANCE
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never store anything on, near, or in contact with the
furnace, such as:
1. Spray or aerosol cans, rags, brooms, dust mops,
vacuum cleaners, or other cleaning tools.
2. Soap powders, bleaches, waxes or other cleaning
compounds, plastic or plastic containers, gasoline,
kerosene, cigarette lighter fluid, dry cleaning fluids,
or other volatile fluids.
3. Paint thinners and other painting compounds, paper
bags, or other paper products. Exposure to these
materials could lead to corrosion of the heat
exchangers.
!
WARNING
For continuing high performance and to minimize possible
furnace failure, periodic maintenance must be performed on this
furnace. Consult your local dealer about proper frequency of
maintenance and the availability of a maintenance contract.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Turn off the gas and electrical supplies to the furnace before
performing any maintenance or service. Follow the operating
instructions on the label attached to the furnace.
!
WARNING
CARBON MONOXIDE POISONING AND FIRE
HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Never operate furnace without a filter or with filter access
door removed.
!
WARNING
58CV
To Next Page
Loading...