Carrier 59MN7A Instruction Manual Page 82
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82
Is AMBER LED status light on?
Is there 24V at SEC-1 and SEC-2?
Is there 115V at L1 and L2?
Replace furnace control.
Is door switch closed?
Replace transformer.
Replace door switch.
Is there 115V going to switch?
Close door switch.
Is circuit breaker closed?
Check for continuity in wire from circuit
breaker to furnace.
Close circuit breaker and go back to
START.
Is AMBER LED status light blinking
rapidly without a pause?
Check for correct line voltage polarity. If
units are twinned, check for proper low-
voltage (24V) transformer phasing.
Is AMBER LED status light blinking
ON/OFF slowly with a combination of
short and long flashes?
Determine status code. The status code
is a 2 digit number with the first digit
determined by the number of short
flashes and the second digit by the
number of long flashes?
To recall previous status codes disconnect the R
thermostat connection, reset power, and put setup
switch SW1-1 in the ON position. The AMBER LED
will flash the status codes in the order of occurrence.
Record status codes until status code #11 flashes (1
short and 1 long flash). After status code #11
flashes the status codes will repeat. Status codes
are erased after 72 hours or can be manually erased
by putting setup switch SW1-1 in the ON position
and jumpering R, W/W1, and Y/Y2 simultaneously
until status code #11 is flashed. When done put
setup switch SW1-1 in the OFF position.
Was there a previous status code other
than #11?
Go to section below for the status code
that was flashed.
Does the control respond to W/W1, W2,
Y1, Y/Y2, and G (24V) thermostat
signals?
Run system through a minimum-heat,
maximum-heat, or cooling cycle to check
operation. Status codes are erased after
72 hours or can be manually erased by
putting setup switch SW1-1 in the ON
position and jumpering R, W/W1, and
Y/Y2 simultaneously until status code
#11 is flashed.
Is 24V present at W/W1, W2, Y1, Y/Y2 or
G thermostat terminals on the furnace
control?
Check room thermostat or
interconnecting cable.
Disconnect all the thermostat wires from
the furnace control.
Does the problem repeat when using a
jumper wire?
Replace furnace control.
The thermostat is not compatible with the
furnace control. Either install a ballast
resistor, connect the Com24V thermostat
terminal to the thermostat, or replace the
thermostat.
YES
NO
YES
YES
YES
YES
YES
SEYSEYSEY
YES
START
YES
YES
NO
NO
NO
ONON
NO
ONON
NO
NO
NO
Troubleshootin
g
Guide
A11290A
Fig. 62 -- Troubleshooting Guide
59MN7A
- Series 200 1
- IMPORTANT 2
- SAFETY CONSIDERATIONS 3
- INTRODUCTION 4
- CODES AND STANDARDS 4
- ELECTROSTATIC DISCHARGE (ESD) 4
- PRECAUTIONS PROCEDURE 4
- ACCESSORIES 5
- LOCATION 5
- * Recommended 6
- Fig. 1 -- Dimensional Drawing 7
- 18-IN. (457.2 mm) 8
- MINIMUM TO BURNERS 8
- AIR FOR COMBUSTION AND 9
- VENTILATION 9
- CONDENSATE TRAP 11
- (Appearance May Vary) 12
- CONDENSATE DRAIN CONNECTION 16
- Horizontal Orientation 17
- INSTALLATION 19
- Horizontal Installation 20
- Filter Arrangement 20
- Fig. 17 -- Media Filter 22
- UPFLOW DOWNFLOW HORIZONTAL 24
- HORIZONTAL TOP 25
- RETURN NOT 25
- PERMITTED FOR 25
- ANY MODEL 25
- COMBUSTION - AIR PIPE 26
- (SEE VENTING SECTION) 26
- AIR DUCTS 27
- Table7–Cooling 28
- With Filter) 28
- Table 7 -- Cooling 29
- With Filter) (Continued) 29
- GAS PIPING 31
- 115--V Wiring 32
- J--Box Installation 33
- 24--V Wiring 33
- Alternate Power Supplies 34
- 12 and 16 38
- Materials 41
- Venting Systems 41
- Locating the Vent Termination 41
- Guidelines 42
- Configure the Furnace 42
- Pipe Adapter 43
- Vent Coupling and Adapter 49
- Downflow Vertical 51
- HORIZONTAL LEFT 52
- RIGHT VENT CONFIGURATION* 52
- Fig. 41 -- Horizontal Right 53
- TOP PLATE ATTACHMENT 54
- COMBUSTION AIR PIPE 54
- (ATTIC OR CRAWLSPACE ONLY) 54
- Abandoned masonry 57
- (per code) 57
- OVERHANG 58
- 12 in. (304.8mm) MIN. Ground 58
- Level OR Snow Level 58
- Select Setup Switch Positions 60
- Purge Gas Lines 61
- Adjustments 61
- Adjust Temperature Rise 62
- Check Safety Controls 64
- Checklist 64
- 338307-201 Rev. F 65
- A11575 AMV 67
- MODULATING FURNACE 69
- U.S.A. Only 72
- SERVICE AND MAINTENANCE 73
- PROCEDURES 73
- Component Self--Test 74
- Care and Maintenance 74
- Servicing Hot Surface Igniter 77
- WINTERIZATION 78
- Burner Flame 79
- Manifold 79
- Fig. 60 -- Blower Assembly 80
- Fig. 61 -- Burner Assembly 81
- Troubleshootin 82
- SEQUENCE OF OPERATION 85
- (Adaptive Mode) 86
- Maximum Heating 87
- Cooling Mode 87
- Catalog No:59MN7A---04SI 90
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