Trane AM7A0C36H31SA Series Service manual

© 2011 Trane
NOTICE: Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice.
IMPORTANT --- This document contains a wiring diagram and ser-
vice information. This is customer property and is to remain with
this unit. Please return to service information pack upon completion
of work.
Air Handler - Convertible
Model: *AM7A0C36H31SA
* May be "A" or "T"
1These Air Handlers are AHRI. certified with various Split System Air Conditioners
and Heat Pumps (AHRI STANDARD 210/240). Refer to the Split System Outdoor
Unit Product Data Guides for performance data.
23/4" Male Plastic Pipe (Ref.: ASTM 1785-76)
HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING
WARNING:
Service Facts
For use with BAYEV series heaters ONLY
▲
WARNING
!
SAFETY HAZARD! This information is intended for use
by individuals possessing adequate backgrounds of electrical and
mechanical experience. Any attempt to repair a central air condition-
ing product may result in personal injury and/or property damage.
The manufacture or seller cannot be responsible for the interpreta-
tion of this information, nor can it assume any liability in connection
with its use.
PRESSURIZED REFRIGERANT! SYSTEM CONTAINS
OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER
REFRIGERANT TO RELIEVE PRESSURE BEFORE OPENING THE
SYSTEM.
DO NOT USE NON-APPROVED REFRIGERANTS OR REFRIGERANT
SUBSTITUTES OR REFRIGERANT ADDITIVES.
▲
WARNING
!
LIVE ELECTRICAL COMPONENTS! During instal-
lation, testing, servicing, and troubleshooting of this product, it may
be necessary to work with live electrical components. Failure to fol-
low all electrical safety precautions when exposed to live electrical
components could result in death or serious injury.
▲
WARNING
!
Note: This unit is certified to UL 1995.
The interior cabinet wall meets the following:
- UL94-5VA Flame Class Listed
- UL723 Steiner Tunnel Listed for 25/50 Flame/
Smoke
- UL746C Listed for Exposure to Ultraviolet Light,
Water Exposure and Immersion
AM7A0C36H31-SF-1A
PRODUCT SPECIFICATIONS
MODEL *AM7A0C36H31SA
RATED VOLTS/PH/HZ. 208-230/1/60
RATINGS 1 See O.D. Specifications
INDOOR COIL — Type Plate Fin
Rows — F.P.I. 3 - 14
Face Area (sq. ft.) 5.50
Tube Size (in.) 3/8
Refrigerant Control EEV
Drain Conn. Size (in.) 2 3/4 NPT
DUCT CONNECTIONS See Outline Drawing
INDOOR FAN — Type Centrifugal
Diameter-Width (In.) 11 X 10
No. Used 1
Drive - No. Speeds Direct - Variable
CFM vs. in. w.g. See Fan Performance Table
No. Motors — H.P. 1 - 1/2
Motor Speed RPM Variable ECM
Volts/Ph/Hz 208-230/1/60
F.L. Amps 3.0
FILTER
Filter Furnished? No
Type Recommended Throwaway
No.-Size-Thickness 1 - 22 X 20 - 1 in.
REFRIGERANT R-410A
Ref. Line Connections Brazed
Coupling or Conn. Size — in. Gas 7/8
Coupling or Conn. Size — in. Liq. 3/8
DIMENSIONS H x D x W
Crated (In.) 57.25 x 23.5 x 25.25
Uncrated 56.9 x 21.75 x 23.5
WEIGHT
Shipping (Lbs.) / Net (Lbs.) 157/146

AM7A0C36H31-SF-1A 2
WIRING DIAGRAM FOR *AM7A0C36H31SA

3AM7A0C36H31-SF-1A
SEQUENCE OF OPERATION FOR *AM7A0C36H31SA
A7 Sequence of Operation
Abbreviations
•AFC–AirowControl
•EVC–ExpansionValveControl
•EEV–ElectronicExpansionValve
•EHC–ElectricHeatControl
•YI–Ysignalfromthecomfortcontrol
•YO–YsignaloutoftheAFCfromthecomfortcontrol
•Y2–Y2signalfromcomfortcontrol
This unit has a unique feature that receives 24VAC analog
inputs from a conventional comfort control and then
converts these inputs to serial communicating signals
between the different controls within the air handler.
The installing and servicing technician should have an
understanding of the sequence of operation to be able
to properly setup and diagnose functions of the air
handler.
The dip switch settings on the control boards must be
properly set to obtain the correct sequence of opera-
tion. Reference the air handler and electric heat wiring
diagrams and dip switch configuration chart for ad-
ditional information.
Continuous Fan
IMPORTANT: If the indoor air exceeds 60% relative
humidity or simply feels uncomfortably humid, it is
recommended that the indoor fan only be used in the
AUTO mode.
1. R-G contacts close on comfort control sending 24VAC
to the G terminal of the AFC.
2. The AFC micro-processor sends a command to the
serial communicating blower motor to run at 50%.
SeeairowDipSwitchsettingsforadditionalinfo.
Heatpump OD Single Stage (heating mode)
1.  R-Ycontactscloseonthecomfortcontrolsending
24VACtoY1terminalontheAFC.
2. Normally closed contacts on the AFC will pass 24VAC
totheYOterminalprovidingpowertotheoutdoorunit
control circuit.
3. R-G contacts close on comfort control sending 24VAC
to the G terminal of the AFC.
4. The AFC micro-processor sends a command to the
serial communicating blower motor to run at 100%.
5. The EVC will drive the EEV to the near closed position
andrefrigerantwillowthroughthecheckvalve.
Heatpump OD Two Stage (heating mode)
1.  R-Y1contactscloseonthecomfortcontrolsending
24VACtoY1terminalontheAFC.
2. Normally closed contacts on the AFC will pass 24VAC
totheYOterminalprovidingpowertotheoutdoorunit
1st stage control circuit.
3. R-G contacts close on comfort control sending 24VAC
to the G terminal of the AFC.
4. The AFC micro-processor sends a command to the
serial communicating blower motor to run at 1st stage
heating cfm.
5. The EVC will drive the EEV to the near closed position
andrefrigerantwillowthroughthecheckvalve.
6.  R-Y2contactscloseonthecomfortcontrolsending
24VACtoY2terminalontheAFC.
7.  TheY2signalispassedthroughtoprovidepowerto
the outdoor unit 2nd stage control circuit.
8. The blower motor will run at 100% of the heating cfm.
OD Single Stage (cooling mode)
6.  R-Ycontactscloseonthecomfortcontrolsending
24VACtoY1terminalontheAFC.
7. Normally closed contacts on the AFC will pass 24VAC
totheYOterminalprovidingpowertotheoutdoorunit
control circuit.
 a. HeatpumpOD–R-Ocontactscloseonthecomfort
control sending 24VAC to the O terminal of the AFC.
The AFC communicates to the EVC that the system is
in cooling mode. The O signal is passed through to the
OD unit.
 b. NonheatpumpOD–ODdipswitchcongurationwill
communicatetotheEVCtocontrolsuperheatonaY
only signal.
8. R-G contacts close on comfort control sending 24VAC
to the G terminal of the AFC.
9. The AFC micro-processor sends a command to the
serial communicating blower motor to run at 100% of
the cooling cfm.
10. The EVC will receive input from the two temperature
sensors and start to control superheat.
OD Two Stage (cooling mode)
1.  R-Y1contactscloseonthecomfortcontrolsending
24VACtoY1terminalontheAFC.TheAFCcommuni-
cates to the EVC to control superheat for 1st stage.
2. Normally closed contacts on the AFC will pass 24VAC
totheYOterminalprovidingpowertotheoutdoorunit
1st stage control circuit.
 a. HeatpumpOD–R-Ocontactscloseonthecomfort
control sending 24VAC to the O terminal of the AFC.
The AFC communicates to the EVC that the system is
in cooling mode. The O signal is passed through to the
OD unit.
 b. NonheatpumpOD–ODdipswitchcongurationwill
communicatetotheEVCtocontrolsuperheatonaY
only signal.
3. R-G contacts close on the comfort control sending
24VAC to the G terminal of the AFC.
4. The AFC micro-processor sends a command to the
serial communicating blower motor to run at the 1st
stage cooling cfm. (1st stage cooling cfm is a multiplier
of 2nd stage cfm)

AM7A0C36H31-SF-1A 4
5. The EVC will receive input from the two temperature sen-
sors and start to control 1st stage superheat.
6.  R-Y2contactscloseonthecomfortcontrolsending
24VACtoY2terminalontheAFC.TheAFCcommuni-
cates to the EVC to control superheat for 2nd stage.
7.  TheY2signalispassedthroughtoprovidepowertothe
outdoor unit 2nd stage control circuit.
8. The blower motor will now run at 100% of the cooling
cfm.
Cooling OD 1 stage
1.  R-Ycontactscloseonthecomfortcontrolsending24VAC
toY1terminalontheAFC.
2. Normally closed contacts on the AFC will pass 24VAC
totheYOterminalprovidingpowertotheoutdoorunit
control circuit.
3. R-G contacts close on the comfort control sending
24VAC to the G terminal of the AFC.
4. The AFC micro-processor sends a command to the serial
communicating blower motor to run at 100% of the cool-
ing cfm.
5. The EVC will receive input from the two temperature sen-
sors and start to control superheat.
Cooling OD Two stage
9.  R-Y1contactscloseonthecomfortcontrolsending
24VACtoY1terminalontheAFC.TheAFCcommuni-
cates to the EVC to control superheat for 1st stage.
10. Normally closed contacts on the AFC will pass 24VAC to
theYOterminalprovidingpowertotheoutdoorunit1st
stage control circuit.
11. R-G contacts close on comfort control sending 24VAC to
the G terminal of the AFC.
12. The AFC micro-processor sends a command to the se-
rial communicating blower motor to run at the 1st stage
cooling cfm. (1st stage cooling cfm is a multiplier of 2nd
stage cfm)
13. The EVC will receive input from the two temperature sen-
sors and start to control 1st stage superheat.
14. R-Y2contactscloseonthecomfortcontrolsending
24VACtoY2terminalontheAFC.TheAFCcommuni-
cates to the EVC to control superheat for 2nd stage.
15. TheY2signalispassedthroughtoprovidepowertothe
outdoor unit 2nd stage control circuit.
16. The blower motor will now run at 100% of the cooling
cfm.
Electric Heat
1. R-W contacts close on the comfort control sending
24VAC to W1 of the AFC.
2. R-G contacts close on the comfort control sending
24VAC to G of the AFC.
3. The AFC communicates to the EHC that 1st stage elec-
tric heat is being called upon.
4. The EHC determines the number of elements that are
used for 1st stage and sends a message to the AFC for
that correct cfm. (The EHC determines the amount of
heat per stage by either factory programming or by the
kw jumper position)
5. The AFC micro-processor sends a command to the serial
communicating blower motor to run and close the blower
interlock relay. The blower motor will now run at the W1
electric heat cfm.
6. On subsequent calls for W2 and/or W3, the EHC will
communicatetotheAFCtherequiredairowrequestand
energize the additional relays.
NOTE: The EHC has “lead-lag” logic built in that energizes the
electric heat relays based upon cycle counts.
Forexample:BAYEV**15–ThersttimeW1onlyisener-
gized; the K1 relay would close and energize the “A”
heater. The second time W1 only is energized; the K2
relay would close and energize the “B” heater. The third
time W1 only is energized; the K3 relay would close and
energize the “C” heater.
Defrost
1. The OD unit will initiate defrost and send 24VAC to the O
terminal of the AFC.
2. The AFC will communicate to the EVC that the OD is
in defrost and the EVC will start to maintain the correct
superheat.
3. X2 from the OD will send 24VAC to W1 of the AFC.
4. The AFC communicates to the EHC that 1st stage elec-
tric heat is being called upon.
5. The EHC determines the number of elements that are
used for 1st stage and sends a message to the AFC for
that correct cfm.
Optional Condensate Switch
1. An optional OEM condensate switch can be installed
within the unit. This switch is only available through the
National Distribution Center or Global Parts.
2. Switch contacts are normally open and close when water
levelrises.Theclosedswitchwillinterruptcurrentowto
theYOterminalandde-energizetheODunit.
3. Switch is only operational during cooling mode. Conden-
sateoverowisnotoperationalduringheatingordefrost
modes.
Standard aftermarket condensate switches cannot be used
within the unit but can be installed exterior of the unit.
SwitchshouldbewiredinserieswithYOwiringtotheOD
unit.
Freeze Protection
1. The EVC control has the ability to sense when the coil is
beginning to ice. After 20 minutes of the evaporator tem-
peraturebelow32degrees,thecontactstotheYOcircuit
will open and de-energize the OD unit.
2. The indoor blower motor will continue to run to aid in
defrostingthecoil.After5minutes,theYOcontactswill
close and cooling operation will begin again.
Blower Delays
1.  Blowerairowdelayscanbesettoenhancesystem
comfort and efficiency. See S2 dip switch settings table
on page 9.

5AM7A0C36H31-SF-1A
SUBCOOLING ADJUSTMENT
The following combinations should be charged to 8
degrees sub-cooling to maintain rated HSPF.
Indoor Unit Model No. Outdoor Unit Model No.
*AM7A0C36H31SA 4A6B4036E1
4A6H5036E1
4TWB4036E1
4TWR5036E1
* May be “A” or “T”
All other non-rated matches must be charged per the
nameplate charging instructions.
Unit Test Mode
Unit Test Mode will exit if any demand is given to the unit.
To enter Unit Test Mode:
1. Shut System Switch on comfort control to Off
2. Power cycle unit power, wait 5 seconds
3. Press and hold the Unit Test Button for 1-2 seconds
Sequence of Unit Test Mode
4. EVC drives the EEV motor to the 1st stage position for 5
seconds
5. EVC drives the EEV motor to the 2nd stage position for 5
seconds
6. AFC energizes the blower at 50% and then continues
torampuntilitreaches100%coolingairow.Humidier
contacts close when the blower starts
7. EHC energizes the W1, W2, and W3 circuit relay(s) for 5
seconds in 5 second intervals
8. All relays de-energize and the blower shuts off after five
seconds.
IfafaultoccursduringtheUnitTestMode,theLEDwillash
the code and continue the test
Fault Reporting
This unit stores the last four faults that have occurred. Each
device will report the last four faults after each power
cycle of the unit. See the Fault Table section in the
Service Facts for a list of fault codes
Clearing Faults
To clear the last four faults of all control boards, press and
hold the Unit Test Button for 10-12 seconds.
Pb
FAULT
UNIT
48
33
32
17
16 1
64
49
BKJumper
TEST
TRANEU.S.INC.
VDD
PGD
MCLR
VSS
PGC
3.3V
SCL
SDA
GND
HUMPART NO.LABEL
BARCODE
1 2 3 4 5
STATUS Yo Jumper
+13.8V
C60
C59
R57R58
R64R65
R76R78
S3
R110
R41
R68
C40
R93
R109
R12
R55
R23
R20
R49
R13
R14
D23
D19
D18
C46
C39
C6
C23
R80
R71
R67
R52
R75
R72
C41
R61
Q6
Q7
R1
R33
R34
J4
Q1
X1
U4
U3
TZ2
T2
T1
R99
R98
R97
R60
R96
R95
R21
R91
R87
R88
R70
R86
R83
R81
R66
R79
R77
R54
R103
R106
R4
R104
R51
R
5
R4
7
R42
R39
R82
R37
R35
R31
R74
R89
R25R18
R19
R10
R9
R8 R3
R2
R5
R7
Q8
MOV1
L2
L3
K1
J3
J6
J9
D36
D35
D1
D22
D29
D25
D24
D7 D4
D2
D28
C57
C54
C51
C49
C48
C47
C52
C43
C42
C36
C35
C34
C31
C30
C29
C7
C3
C2
C1
U1
C58
R105
C50
U2
R24R17
D6 D3
RNET
RNET 2
R73
1
J8
Yo
R
B
O
Y1
J1
W2 W1
R63
R62
R56
D21
D20C32
C33
R38R36
R16R15
R32
R11
R28R27
R26
D13
D12
D5
D11
D10
C24
C25
C4C5C16C17D8
R50
R45
R85R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
R107
K2
R6
C53
C22
C19 C15 C12
C9
C8 C11
C14
C18 C21
D26
R69
C37
C38
L1
R102
D27
R40
R46
R43
Q3
Q
1
1
HP
O
U
Airflow Control (AFC)
Unit Test Button

AM7A0C36H31-SF-1A 6
Refrigerant Switch SW1
Set the system refrigerant to either R-410A or R-22•
using the Refrigerant Switch located on the Expan-
sion Valve Control board (EVC) in the Control Pocket.
Factory default is R-410A.•
Note: The power must be shut off and then re-applied•
in order for the EVC to recognize the change.
Wire Ties
Pb
FAULT
UNIT
48
33
32
17
16 1
64
49
BK Jumper
TEST
TRANEU.S.INC.
VDD
PGD
MCLR
VSS
PGC
3.3V
SCL
SDA
GND
HUM
5V
MOTOR
GND
RX
TX
+12V
PART NO.LABEL
BARCODE
1 2 3 4 5
1 2 3 4 5
STATUS Yo Jumper
+12V
+13.8V
C60
C59
R57R58
R64R65
R76R78
C20
C28
C55
S3
R110
R59
R41
R68
C40
R108
R93
R109
R12
R55
R23
R20
R49
R13
R14
D23
D19
D18
C46
C39
C6
C23
R80
J13
R71
R67
R52
R75
R72
Q2
C41
R61
Q6
Q7
R1
R33
R34
J4
Q1
X1
U5
U4
U3
TZ2
T2
T1
R99
R98
R97
R60
R96
R95
R21
R91
R87
R88
R70
R86
R83
R81
R66
R79
R77
R54
R103
R106
R4
R104
R51
R53
R48
R47
R44
R42
R39
R82
R37
R35
R31
R30
R74
R89
R25R18
R19
R10
R9
R8 R3
R2
R5
R7
Q8
Q4
PTC1
MOV1
L2
L3
K1
J3
J6
J9
D36
D35
D34
D1
D22
D29
D25
D24
D7 D4
D2
D28
C57
C54
C56
C51
C49
C48
C47
C52
C43
C42
C36
C35
C34
C31
C30
C29
C13
C7
C3
C2
C1
U1
C58
R105
C50
U2
J7
R24R17
D6 D3
D14
D17
RNET 1
RNET 2
R73
1
J8
Yo
R
B
O
Y1
J1
W2 W1
R63
R62
R56
D21
D20C32
C33
R38R36
R16R15
R32
R11
R28R27
R26
D13
D12
D5
D11
D10
C24
C25
C4C5C16C17D8
R50
R45
R85R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
R107
R29
K2
R6
C53
C22
C19 C15 C12
C9
C8 C11
C14
C18 C21
D26
R69
C37
C38
C10
D9
L1
R102
D27
R40
R22
R46
R43
Q3 Q5
1
1
HP
2(Compressor)
2(Stages)
AC (System)
}Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool OffDelay
}
INDOOR
CFM
S1
on
on
S2
S2 Dip Switch
S1 Dip Switch
SW1 Dip
Switch
SW1 Dip
Switch
Pb
FAULT
UNIT
48
33
32
17
16 1
64
49
BK Jumper
TEST
TRANE U.S. INC.
VDD
PGD
MCLR
VSS
PGC
3.3V
SCL
SDA
GND
HUM
5V
MOTOR
GND
RX
TX
+12V
PART NO. LABEL
BAR CODE
1 2 3 4 5
1 2 3 4 5
STATUS Yo Jumper
+12V
+13.8V
C60
C59
R57R58
R64R65
R76R78
C20
C28
C55
S3
R110
R59
R41
R68
C40
R108
R93
R109
R12
R55
R23
R20
R49
R13
R14
D23
D19
D18
C46
C39
C6
C23
R80
J13
R71
R67
R52
R75
R72
Q2
C41
R61
Q6
Q7
R1
R33
R34
J4
Q1
X1
U5
U4
U3
TZ2
T2
T1
R99
R98
R97
R60
R96
R95
R21
R91
R87
R88
R70
R86
R83
R81
R66
R79
R77
R54
R103
R106
R4
R104
R51
R53
R48
R47
R44
R42
R39
R82
R37
R35
R31
R30
R74
R89
R25R18
R19
R10
R9
R8 R3
R2
R5
R7
Q8
Q4
PTC1
MOV1
L2
L3
K1
J3
J6
J9
D36
D35
D34
D1
D22
D29
D25
D24
D7 D4
D2
D28
C57
C54
C56
C51
C49
C48
C47
C52
C43
C42
C36
C35
C34
C31
C30
C29
C13
C7
C3
C2
C1
U1
C58
R105
C50
U2
J7
R24R17
D6 D3
D14
D17
R NET 1
R NET 2
R73
1
J8
Yo
R
B
O
Y1
J1
W2 W1
R63
R62
R56
D21
D20C32
C33
R38R36
R16R15
R32
R11
R28R27
R26
D13
D12
D5
D11
D10
C24
C25
C4C5C16C17D8
R50
R45
R85R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
R107
R29
K2
R6
C53
C22
C19 C15 C12
C9
C8 C11 C14 C18 C21
D26
R69
C37
C38
C10
D9
L1
R102
D27
R40
R22
R46
R43
Q3 Q5
1
1
HP
2 (Compressor)
2 (Stages)
AC (System)
}Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool Off Delay
}
INDOOR
CFM
S1
on
on
S2
Airflow Control (AFC)
Distribution Board
Electronic Expansion Valve Control (EVC)
Electronic Expansion Valve Control (EVC)
Control Layout

7AM7A0C36H31-SF-1A
Dip Switch S1
Set the S1-1 and S1-2 dip switches for the OD•
multiplier (tonnage) per the chart.
Set the S1-3 dip switch for AC or HP.•
ODTYPE S1‐3
HP OFF
AC ON
S1
Airflow Control (AFC)
1
1
1 2 3 4 5
1 2 3 4 5
HP
2(Compressor)
2(Stages)
AC (System)
}
OUTDOOR
Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool OffDelay
}
INDOOR
CFM
+12V
R13
R14
R1
R4
1
U1
RNET 1
S1
on
on
S2
RNET 2
R6
C22
C19
C15 C12
C18
C21
C10
D9
L1
R22
Set the S1-4 dip switch for the number of stages•
on the outdoor unit.
ODSTAGES S1‐4
1 OFF
2 ON
Set the S1-5 dip switch for the number of•
compressors.
#COMPRESSORS S1‐5
1 OFF
2 ON
16 SEER = 1 Compressor
19 SEER = 2 Compressors
20 SEER = 2 Compressors
16 SEER = 2 Stages
19 SEER = 2 Stages
20 SEER = 2 Stages
INDOORMODEL S1‐1 S1‐2 ODMULTIPLIER
OFF OFF 3
OFF ON 2
ON OFF 2.5
ON ON 3.5
*Maybe"A"or"T"
*AM7A0C36H31SA
NOTE:TheODmultiplierinconjuctionwiththeCFM/TONcan
beusedtoadjusttotalairflowforyourapplication.Example:
4.5Tx370CFM/TON=1665CFM

AM7A0C36H31-SF-1A 8
Dip Switch S2
Set the S2-1 and S2-2 dip switches for the•
Cooling and Heating CFM/Ton.
Set the S2-3 and S2-4 dip switches for the Cool•
Off Delay.
COOLOFFDELAY S2‐3 S2‐4
1.5m@100% OFF OFF
NODELAY OFF ON
3m@50% ONOFF
ENHANCED ONON
AIRFLOWMODE S2‐5
*TORQUE OFF
CONSTANTCFM ON
Set the S2-5 dip switch for the airflow mode.•
Indoor Blower Timing
This ENHANCED MODE selection provides a
ramping up and ramping down of the blower
speed to provide improved comfort, quietness,
and potential energy savings. The graph on the
right shows the ramping process.
OFF OFF
50%
80%
100% if necessary
50%
Dehumidify
Fast Coil Cooling Efficiency
7.5
minutes
3
minutes
1
minute
FAN OPERATION (CFM)
COMPRESSOR OPERATION ON OFF
as required
S2
1
1
1 2 3 4 5
1 2 3 4 5
HP
2(Compressor)
2(Stages)
AC (System)
}
OUTDOOR
Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool OffDelay
}
INDOOR
CFM
+12V
R13
R14
R1
R4
1
U1
RNET 1
S1
on
on
S2
RNET 2
R6
C22
C19
C15 C12
C18
C21
C10
D9
L1
R22
Airflow Control (AFC)
* Torque mode is optional and is recommended for high static
applications. High static conditions dramatically increase energy
consumption with variable speed motors. Evaluate the blower
performance table in relationship to the duct system to determine
the benefit of each installation.
*Torquemodewillreduceairowwhenstaticisaboveapproxi-
mately 0.4" water column.
* All heating modes default to Constant CFM.
INDOORMODEL S2‐1 S2‐2
COOLING
CFM/TON
HEATING
CFM/TON
OFF OFF 370 420
OFF ON 350 400
ON OFF 390 440
ON ON 410 450
*Maybe"A"or"T"
*AM7A0C36H31SA

9AM7A0C36H31-SF-1A
NOTE: Minimum auxiliary heating airflow is
automatically configured by the air handler
model and the auxiliary heater model number.
This is not field adjustable.
MODEL NO.
BAYEVAC05BK1A
A
BAYEVAC05LG1A
A
BAYEVAC08BK1A
A
BAYEVAC08LG1A
A
BAYEVAC10BK1A
A
BAYEVAC10LG1A
A
BAYEVAC10LG3AA
BAYEVBC15BK1A
A
BAYEVCB15LG3A
A
BAYEVBC20BK1AA BAYEVCC25BK1AA
*AM7A0A24H21SAA 480/560 480/800 560/800 560/800 -- -- --
*AM7A0B30H21SAA 600/600 600/700 800/900 600/700 800/900 -- --
*AM7A0C36H31SAA 720/720 840/1080 840/1200 720/840 840/1080 -- --
*AM7A0C42H31SAA 840/1000 1000/1200 1000/1250 840/1000 1000/1250 -- --
*AM7A0C48H41SAA 1000/1000 1000/1200 1200/1400 1200/1200 1200/1600 1400/1600 1400/1600
*AM7A0C60H51SAA 1000/1000 1000/1000 1200/1400 1200/1200 1200/1600 1400/1600 1200/1800
MINIMUM HEATER AIRFLOW CFM - HEATER MATRI
X
COOLING / HP AIRFLOW
SEE AIR HANDLER NAMEPLATE OR PRODUCT DATA
Minimum Heating Airflow Settings
AIRFLOW PERFORMANCE
*AM7A0C36 WITH WET COIL, NO FILTER
OUTDOOR
MULTIPLIER
(TONS)
COOLING
AIRFLOW
SETTING
Airow
Power
EXTERNAL STATIC PRESSURE HEATING
AIRFLOW
SETTING
Airow
Power
EXTERNAL STATIC PRESSURE
0.1 0.3 0.5 0.7 0.9 0.1 0.3 0.5 0.7 0.9
2 tons
350
CFM/ton
CFM
Watts
724
44
704
77
694
111
695
148
698
185
400
CFM/ton
CFM
Watts
813
57
797
94
794
133
799
174
806
215
370
CFM/ton
CFM
Watts
759
49
744
84
738
120
740
158
742
197
420
CFM/ton
CFM
Watts
849
63
837
102
835
142
841
185
849
228
390
CFM/ton
CFM
Watts
795
54
784
91
780
129
783
169
786
209
440
CFM/ton
CFM
Watts
884
69
876
110
876
153
883
197
891
242
410
CFM/ton
CFM
Watts
830
60
823
99
822
139
824
180
827
222
450
CFM/ton
CFM
Watts
902
72
895
114
897
158
902
203
912
249
2.5 tons
350
CFM/ton
CFM
Watts
879
68
876
110
877
153
881
197
884
240
400
CFM/ton
CFM
Watts
992
91
991
138
998
188
1005
237
1014
287
370
CFM/ton
CFM
Watts
923
77
924
121
927
167
932
213
936
258
420
CFM/ton
CFM
Watts
1036
101
1040
152
1048
204
1057
256
1064
307
390
CFM/ton
CFM
Watts
968
86
971
133
977
181
983
230
987
277
440
CFM/ton
CFM
Watts
1081
113
1089
167
1099
221
1110
277
1116
330
410
CFM/ton
CFM
Watts
1012
96
1020
146
1028
197
1034
248
1039
298
450
CFM/ton
CFM
Watts
1105
119
1113
174
1125
231
1136
287
1141
341
3 tons** †
350
CFM/ton
CFM
Watts
1036
102
1044
153
1053
206
1060
257
1064
308
400
CFM/ton
CFM
Watts
1175
140
1189
200
1203
261
1214
321
1215
377
370
CFM/ton
CFM
Watts
1090
116
1102
171
1114
227
1122
282
1123
334
420
CFM/ton
CFM
Watts
1234
159
1251
223
1267
288
1275
351
1272
406
390 †
CFM/ton
CFM
Watts
1145
132
1161
191
1176
251
1184
309
1184
363
440
CFM/ton
CFM
Watts
1295
180
1315
250
1331
318
1335
381
1325
435
410
CFM/ton
CFM
Watts
1204
150
1223
213
1238
277
1246
337
1242
391
450
CFM/ton
CFM
Watts
1327
192
1348
264
1362
264
1364
396
1350
449
3.5 tons
350
CFM/ton
CFM
Watts
1199
149
1218
211
1233
274
1241
335
1237
389
400
CFM/ton
CFM
Watts
1380
214
1403
289
1414
360
1409
422
1389
472
370
CFM/ton
CFM
Watts
1269
172
1291
240
1307
307
1311
370
1300
423
420
CFM/ton
CFM
Watts
1459
248
1478
327
1481
397
1467
456
1395
476
390
CFM/ton
CFM
Watts
1342
200
1367
273
1380
343
1378
405
1358
456
440
CFM/ton
CFM
Watts
1538
287
1550
366
1542
433
1504
478
1388
472
410
CFM/ton
CFM
Watts
1419
232
1442
309
1449
380
1438
440
1394
478
450
CFM/ton
CFM
Watts
1575
307
1583
385
1570
450
1501
477
1385
470
NOTES:
1. * Models start with "A" or "T"
2. ** Not an actual OD size
3. † Factory Setting
4.Atcontinuousfansetting:Airowvaluesareapproximately50%ofthelistedcoolingvalues
5.StatusLEDwillblinkonceper100CFMrequested.Intorquemode,actualairowmaybelower.

AM7A0C36H31-SF-1A 10
DISTANCE FROM BELLY BAND TO SHAFT FACE OF MOTOR FOR MINIMUM VIBRATION
WHEEL
BLOWER HOUSING
BELLYBAND
MOTOR
A
A is determined per chart
Wheel is centered in
Blower Housing
MODEL DIM "A"
*AM7A0A24H21SA 2-1/4
*AM7A0B30H21SA 2-1/4
*AM7A0C36H31SA 2-1/4
*AM7A0C42H31SA 2-1/4
*AM7A0C48H41SA 2-1/4
*AM7A0C60H51SA 2-1/4
* May be "A" or" T"
kW BTUH kW BTUH
No Heater 0 - - 3.0** 4 15 - - 3.0** 4 15
BAYEVAC05++1 1 4.80 16392 20.0 29 30 3.60 12294 17.3 25 25
BAYEVAC08++1 1 7.68 26228 32.0 44 45 5.76 19671 27.7 38 40
BAYEVAC10++1 1 9.60 32785 40.0 54 60 7.20 24589 34.6 47 50
BAYEVAC10LG3 1-3 PH 9.60 32785 23.1 32 35 7.20 24589 20.0 28 30
BAYEVBC15LG3 1-3 PH 14.40 49178 34.6 47 50 10.80 36883 30.0 41 45
9.60 32785 40.0 54 60 7.20 24589 34.6 47 50
4.80 16392 20.0 25 25 3.60 12294 17.3 22 25
9.60 32785 40.0 54 60 7.20 24589 34.6 47 50
9.60 32785 40.0 50 50 7.20 24589 34.6 43 45
Note: * May be "A" or "T"
Note: ** Motor Amps
Note: MCA and MOP for circuit 1 contains the motor amps
BAYEVBC15BK1 - Circuit 1
BAYEVBC15BK1 - Circuit 2
BAYEVBC20BK1 - Circuit 1
BAYEVBC20BK1 - Circuit 2
Heater
A
mps per
Circuit
Minimum
Circuit
Ampacity
Maximum
Overload
Protection
Maximum
Overload
Protection
Heater Attribute Data
Capacity Heater
Amps per
Circuit
Minimum
Circuit
Ampacity
2
2
*AM7A0C36H31SA
Heater Model No. No. of
Circuits
240 Volt 208 Volt
Capacity

11 AM7A0C36H31-SF-1A
Pb
FAULT
UNIT
48
33
32
17
16 1
64
49
TRANE U.S.INC.
VDD
PGD
MCLR
VSS
PGC
3.3V
SCL
SDA
GND
HUM
5V
MOTOR
GND
RX
TX
+12V
PART NO.LABEL
BARCODE
1 2 3 4 5
1 2 3 4 5
STATUS
+12V
+13.8V
C60
C59
R57R58
R64R65
R76R78
C20
C28
C55
S3
R110
R59
R41
R68
C40
R108
R93
R109
R12
R55
R23
R20
R49
R13
R14
D23
D19
D18
C46
C39
C6
C23
R80
R71
R67
R52
R75
R72
Q2
C41
R61
Q6
Q7
R1
R33
R34
J4
Q1
X1
U5
U4
U3
TZ2
T2
T1
R99
R98
R97
R60
R96
R95
R21
R91
R87
R88
R70
R86
R83
R81
R66
R79
R77
R54
R103
R106
R4
R104
R51
R53
R48
R47
R44
R42
R39
R82
R37
R35
R31
R30
R74
R89
R25R18
R19
R10
R9
R8 R3
R2
R5
R7
Q8
Q4
PTC1
MOV1
L2
L3
K1
J3
J6
J9
D36
D35
D34
D1
D22
D29
D25
D24
D7 D4
D2
D28
C57
C54
C56
C51
C49
C48
C47
C52
C43
C42
C36
C35
C34
C31
C30
C29
C13
C7
C3
C2
C1
U1
C58
R105
C50
U2
J7
R24R17
D6 D3
D14
D17
RNET 1
RNET 2
R73
1
J8
Yo
R
B
O
Y1
J1
W2 W1
R63
R62
R56
D21
D20C32
C33
R38R36
R16R15
R32
R11
R28R27
R26
D13
D12
D5
D11
D10
C24
C25
C4C5C16C17D8
R50
R45
R85R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
R107
R29
K2
R6
C53
C22
C19
C15
C12
C9
C8
C11
C14
C18
C21
D26
R69
C37
C38
C10
D9
L1
R102
D27
R40
R22
R46
R43
Q3 Q5
DH Jumper
Yo Jumper
W2 W1
TEST
J13
1 1
HP
2(Compressor) 2(Stages)
AC (System)
}Capacity (Tons)
OUTDOOR
}
Torque
CFM/Ton
Cool OffDelay
}
INDOOR
CFM
S1
on
on
S2
J4
J3
J1
J6
TEST
CLOSE
410
FAULT
UNIT
22
OPEN
STATUS
FAULT
UNIT
STATUS
OFF ON
J2
J4
J5
J2 - COMM
J13 - Motor
J4
J3
J6
J1
J1-1
BR wire Not Used
Unit Test
SW1
STATUS LED
J6
24 VAC
FAULT LED
To EEV Stator
To Internal Condensate Switch (Optional)
R410A / R22
OPEN TEST CLOSE
Evap Gas
See Table
Evap Saturation
UNIT LED
STATUS LED
Airflow Control (AFC)
Distribution Board
Electronic Expansion Valve Control (EVC)
FAULT LED
UNIT LED
HUM
BK Jumper
YO Jumper
(Do Not Cut)
Air Handler Control Panel

AM7A0C36H31-SF-1A 12
AFCSTATUSLED
ONSOLID
Powerupandduringlast4
faulthistorysequence
1Flash Stand‐byoridle
MultipleFlash
CFMdemand‐1flashper100
cfm
AFC STATUS LEDS
Unit LED
1 Flash Normal
Rapid Communication Busy Error
Off No power
AFC
Fault LED Description
OFF No Fault
Solid On Internal control failure
1 24VAC fuse blown
2PM Data Corrupt or Missing / Motor Mismatch
4 Blower communication error
5Internal communication error (refer to Unit LED on EVC, EHC, HHC) (1)(2)
11 EVC has detected a fault condition (refer to Fault LED on EVC)
12 EHC / HHC has detected a fault condition (refer to Fault LED on EHC / HHC)
1) If Unit LED on AFC is flashing 2 times/second, AFC is causing the error.
2) Unit LED on suspect control will flash 2 times/second. All LED's will be off if power is not applied.
AFC FAULT CODES
FAULT
UNIT
TRANE U.S.INC.HUM
BARCODE
STATUS
R55
R49
D18
R80
T2
T1
R60
R70
R66
R82
R74
R7
Q8
J6
J9
D22
D25
D28
C52
R73
1
J8
Yo
R
B
O
Y1
J1
W2 W1
R63
R62
R56
D21
D20 C32
C33
R38
R16
R28 R27
R26
D12
D5
D11
D10
C16C17
R50
R45
R85R84
D16
D15
D31
D30
C26
C27
C44
C45
D32
D33
R94
R100
R101
K2
R69
DH Jumper
Yo Jumper
W2 W1
FAULT
UNIT
STATUS
STATUS
LED
FAULT
LED
UNIT
LED

13 AM7A0C36H31-SF-1A
EVC FAULT CODES
EVC STATUS LED (Non Heat Pump Systems)
Flash
1 Cool mode / No active call
2 Active call for 1st stage cooling
3
A
ctive call for 2nd stage cooling
NOTE: Single stage OD systems will report 2nd stage flash codes
EVC STATUS CODES
EVC STATUS LED (Heat Pump Systems)
Flash
1 Cool mode / No active call
2 Active call for 1st stage cooling or defrost
3 Active call for 2nd stage cooling or defrost
4 Heat mode selected or System switch off
5 Active call for 1st stage heating
6
A
ctive call for 2nd stage heating
NOTE: Single stage OD systems will report 2nd stage flash codes
Unit LED
1 Flash Normal
Rapid Communication Busy Error
Off No power
EVC
Fault LED Description
OFF No Fault
1 Stepper Motor coil has an open circuit or intermittent short (Replace coil)
2Control has detected an internal failure (Replace EEV control, EVC)
3Saturated Gas Sensor input out of range (Verify resistance, 5VDC output from control)
(1)
4Evaporator Gas Sensor input out of range (Verify resistance, 5VDC output from contro
l
(1)
5Stepper Motor Coil is shorted (Replace coil) (2)
6Valve is not responding to a change in position. (Possible stuck valve)
7High superheat (Low charge or restriction)
10 Low superheat (Check airflow, possible stuck valve)
(3)
11 Condensate drain switch activated for 100 seconds (Check condensate switch and drain(2)
13 Indoor frost protection activated (Check refrigerant charge and airflow)(2)
14 Internal communication error (All OD operation is terminated)
15 Configuration fault (All operation is terminated) (Cycle power & check if PM error is present)
16 Outdoor status fault (All operation is terminated)
(4)
1) EEV will try to go to a safe position, cooling attempt allowed
2) K1 relay opens on EVC, Yo disabled
3) Cooling attempt allowed, 5 consecutive Y calls with same condition disables Yo
4) Any internal communication wire broken/disconnected will trigger error the fault and all OD operation
will be terminated. EHC will operate normally.
FAULT
R80
R70
D
D28
R73
R100
K2
J4
TEST
CLOSE
410
FAULT
UNIT
22
OPEN
STATUS
FAULT
OFF ON
STATUS
LED
FAULT
LED
UNIT
LED

AM7A0C36H31-SF-1A 14
Flash
1
2
3
4
5
NOTE: On a call for heat, STATUS LED will flash per
the table above every 4 seconds
EHC STATUS LED
1 heater relay energized
2 heater relays energized
3 heater relays energized
4 heater relays energized
5 heater relays energized
NOTE: Standby mode STATUS LED will flash 1 time per
second
Unit LED
1 Flash Normal
Rapid Communication Busy Error
Off No power
EHC STATUS LEDS
EHC FAULT CODES
EHC F
au
lt
LED Description
OFF Nofault
1 Internalcommunicationerror
2 Heatrelaystuckclosed
3 Heatrelaystuckopen
4 Non‐cyclinglimit(NTCO)orelementopen
5 Cyclinglimit(CTCO)open
6Configurationerror(1)
8 Blowerinterlockrelaystuckopenorstuckclosed
1) Confirm heater model and kw jumper match
NOTES:

15 AM7A0C36H31-SF-1A
Electronic Expansion Valve Test
Note: Close Valve and Open Valve Tests are active in any mode of operation
Test Pins: OPEN, CLOSE, TEST (See J4 on EVC Board)
Close Valve Test - Touch CLOSE pin to TEST pin.
EEV drives closed (5 seconds max) and stays closed for 1.5 minutes (90 seconds).
  1)StatusLEDwillbeashing.
2) Gauges should indicate suction pressure dropping.
•Valveisworking.
•LPCOmaytrip.
Note: The Close Valve Test will exit after 1.5 minutes (90 seconds) and will not reinitiate (requires a break and make to
initialize). To clear faults stored in memory, apply a jumper between Close and Test pins for 10 seconds.
Open Valve Test - Touch OPEN pin to TEST pin.
EEV drives open (5 sec max) and stays open for 30 seconds.
  1)StatusLEDwillbeashing.
2) Temperature probe should indicate superheat falling.
•Valveisworking.
Note: If jumper is left on pins, the OPEN VALVE TEST will be cleared after 30 seconds and will not reinitiate (requires a
break and make to reinitialize).
Exit Test Mode - The Open Valve Test or Closed Valve Test can be cancelled by jumping to the opposite mode Test pin.
The system will return to normal super heat control.
Saturation
Sensor
(EVAP SAT)
Vapor Line
Sensor
(EVAP GAS)
EEV TEST PROCEDURES

AM7A0C36H31-SF-1A 16
TEMP F TEMP
C
THERMISTOR
RESISTANCE
(OHMS)
Volts DC at plug J3
EVAP SAT - Brown to Brown
EVAP GAS - Black to Black
20 -6.7 45076 3.20
21 -6.1 43764 3.17
22 -5.6 42494 3.14
23 -5.0 41266 3.10
24 -4.4 40077 3.07
25 -3.9 38927 3.04
26 -3.3 37813 3.00
27 -2.8 36736 2.97
28 -2.2 35692 2.93
29 -1.7 34681 2.90
30 -1.1 33703 2.86
31 -0.6 32755 2.83
32 0.0 31838 2.80
33 0.6 30949 2.76
34 1.1 30087 2.73
35 1.7 29253 2.69
36 2.2 28445 2.66
37 2.8 27661 2.62
38 3.3 26902 2.59
39 3.9 26166 2.56
40 4.4 25452 2.52
41 5.0 24761 2.49
42 5.6 24090 2.45
43 6.1 23440 2.42
44 6.7 22810 2.39
45 7.2 22198 2.35
46 7.8 21605 2.32
47 8.3 21030 2.29
48 8.9 20472 2.25
49 9.4 19931 2.22
50 10.0 19405 2.19
51 10.6 18896 2.16
52 11.1 18401 2.12
53 11.7 17921 2.09
54 12.2 17455 2.06
55 12.8 17002 2.03
56 13.3 16563 2.00
57 13.9 16137 1.97
58 14.4 15723 1.94
59 15.0 15320 1.91
60 15.6 14930 1.88
61 16.1 14550 1.85
62 16.7 14182 1.82
63 17.2 13824 1.79
64 17.8 13476 1.76
65 18.3 13138 1.73
66 18.9 12810 1.70
67 19.4 12491 1.67
68 20.0 12181 1.65
69 20.6 11879 1.62
70 21.1 11586 1.59
TEMP
F
TEMP
C
THERMISTOR
RESISTANCE
(OHMS)
Volts DC at plug J3
EVAP SAT - Brown to Brown
EVAP GAS - Black to Black
72 22.2 11024 1.54
74 23.3 10492 1.49
76 24.4 9990 1.44
78 25.6 9515 1.39
80 26.7 9065 1.34
82 27.8 8639 1.29
84 28.9 8236 1.25
86 30.0 7855 1.20
88 31.1 7493 1.16
90 32.2 7150 1.12
92 33.3 6825 1.08
94 34.4 6516 1.04
96 35.6 6224 1.01
98 36.7 5946 0.97
100 37.8 5682 0.93
102 38.9 5432 0.90
104 40.0 5194 0.87
106 41.1 4968 0.84
108 42.2 4753 0.81
110 43.3 4548 0.78
112 44.4 4354 0.75
114 45.6 4169 0.72
116 46.7 3992 0.70
118 47.8 3825 0.67
120 48.9 3665 0.65
122 50.0 3513 0.62
124 51.1 3368 0.60
126 52.2 3230 0.58
128 53.3 3098 0.56
130 54.4 2972 0.54
132 55.6 2853 0.52
134 56.7 2738 0.50
136 57.8 2629 0.48
138 58.9 2525 0.46
140 60.0 2425 0.45
142 61.1 2330 0.43
144 62.2 2239 0.42
146 63.3 2153 0.40
148 64.4 2070 0.39
150 65.6 1990 0.37
THERMAL RESISTANCE AND VOLTAGE TABLE
J3 J3
Evap Gas
See Table Above
Test Pin-Pin
Evap Saturation

17 AM7A0C36H31-SF-1A
Sensor Check
Turn system switch on comfort control
to OFF and fan to ON position Wait 10 minutes Measure return air temperature Measure VDC at J3 connector on EVC. (See EVC table for J3 location)
Does voltage(s) measured correspond
to return air temperature?
Verify resistance per
Thermal Resistance Table
and Voltage table.
Sensors are good.
No, remove J3 connector
and measure VDC Is VDC between 4.5 – 5?
Yes, EVC is good No, replace EVC
Verify connections for sensors are
plugged in and connected properly
Start Here

AM7A0C36H31-SF-1A 18
HIGH SUPERHEAT
Superheat above 30F at OD unit
Start Here
Is subcooling at the
outdoor unit
between 8-12F?
Verify line set is
properly sized for
application
NO
Verify that OD
condenser coils
are clean
Add refrigerant
until subcooling
reaches ~10F
Recheck
superheat
Is liquid line temperature
at the indoor unit within
8F of outdoor liquid line
temperature?
Verify line set size
and charge is
correct
NO
Perform “OPEN
VALVE” test at
EVC.
YES
Does
superheat drop
below 30F?
Is indoor
temperature
>85F?
NO
Perform “CLOSE
VALVE” test at
EVC.
YES
Does suction
pressure go
down?
EEV and coil are working.
Replace EVC
Check operation
YES
YES
Perform
temperature
sensor check
YES
NO
The system is running at
maximum capacity and this
may be causing the high
superheat. Wait until the
indoor temperature is less
than 80F and check the
superheat again.
Replace EEV.
Check operation
Ohm coil per FIG 1?
Is ohm reading
correct?
YES
Replace coil NO
4 - Phase Coil Control
Figure 1
4 - BLUE
5 - BROWN (COMMON)
6 - RED (COMMON)
3 - ORANGE
2 - YELLOW
1 - WHITE
● Brown (common) to Blue or Yellow should measure 46 ohms
● Red (common) to Orange or White should measure 46 ohms

19 AM7A0C36H31-SF-1A
LOW SUPERHEAT
Superheat below 3F at OD unit
Start Here
Is indoor blower
running?
Verify field wiring
is correct. See
CTM motor trouble
shooting
NO
Is filter, coil,
and blower
wheel clean?
YES Clean or replace
as needed
NO
Perform sensor
check
YES
Perform “CLOSE
VALVE” test at
EVC.
Does suction
pressure drop?
Perform “OPEN
VALVE” test at
EVC.
Does suction
pressure rise?
Replace EVCYES
Replace EVCYES
Replace EEV.
Check operation
Ohm coil per FIG1
Is ohm reading
correct? YESReplace coil NO
NO
NO
4 - Phase Coil Control
Figure 1
4 - BLUE
5 - BROWN (COMMON)
6 - RED (COMMON)
3 - ORANGE
2 - YELLOW
1 - WHITE
● Brown (common) to Blue or Yellow should measure 46 ohms
● Red (common) to Orange or White should measure 46 ohms

Trane
6200 Troup Highway
Tyler, TX 75707
www.trane.com
For more information contact
your local dealer (distributor)
01/11
The manufacturer has a policy of continuous product and product data improvement, and it reserves the right
to change design and specifications without notice.