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18 Unitary Products Group
66297-YIM-C-0205
TROUBLESHOOTING
WARNING:Troubleshooting of components necessarily re
-
quires opening the electrical control box with the
power connected to the unit. Use extreme care
when working with live circuit! Check the unit
nameplate forthe correct rangebefore making any
connections with line terminals.
CAUTION: The wire number or color and terminal designa
-
tions referred to may vary. Check the wiring label
inside the control box access panel for the correct
wiring.
CAUTION: If the variable speed motor found in the BHH060
models operates erratically, check the fan control
board for the presence of a break-off tab. Remove
tab if present.
FIG. 5 - TYPICAL WIRING DIAGRAM BHH060 MODELS- 208/230-1-60 POWER SUPPLY
DEF
DEF
T'STAT
112
/BR
111
/R
PTCR
K7
COOL/BLU
HEAT/BLK
GRN
240V/PR
240V/BK
O/ORN
W/GY
G/PRP
Y/YEL
C2/BRN
C1/BRN
BKBK
BLBK
R/RED
EM/W
292/R
NO
COM
K7
205/R
B
A
TB2
S4
P4
151312119
1 2 3 5 6
I.D.FAN
MOTOR
230V
P5
S5
54321
HTR 5
NOCOM
REDBK
PR
K6
714 715 716
711
NOCOM
BL
BK
PR
HTR 3
K5
712 713
128/BK
224/R
213/R
201/BR
815
/R
816
/O
K6
817
/O
814
/BL
K5
2
SPEED
LTRIP
ECM
225/BK
226/O
FAN CONTROL
BOARD
708707706
705704
703
17B, 13D
15D
14D
12D
OD FAN
MOTOR
1
M1-1
M1-2
L1 T2T1 L2
BRN
PRP
1
COMPR
101/BK
103
/BR
102/Y
RC2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
ELEMENTARY DIAGRAM
GND
LUG
C
R
S
RC1
104
/R
K3
K4
24V
RYGW2
W1
OC
F24
230V
TB1
109/BK
108/PR
F3
F4
F5
F6
HTR 2
HTR 4
HTR 1
PR
PRBK
BK
701/Y
702/PR
BL
RED
COM NO
COM NO
808/BR
809/O
L2 L1
L2 L1
L2
H1
L1
L1
T
H4
LH
FL
K4
K3
811/O
813
/O
129/PR
27
28
29
30
31
32
33
34
35
36
37
709
/BK
710
/PR
1
2
3
4
P3 S3
1
2
3
4
H2
H3 5
6
812/R
810/BL
S2P2
T1
C
208V
K1
LS
K2
F1 F2
BLK
201/BR
DEFROST
CONTROL
031-01268-000B
M
R
C
W1
COND FAN
COMPR
RELAY
DFST
S TAT
PRESS
SWITCH
RV
M1
222/Y
FS
HP
803
W
O
Y
C
R
X
804
802
805
220/O
RVS
221/BR
LP
203/BR
BLU
BLU
114/BK
DS
214/BR
COOL
OFF
HEAT
EM HT
Y
W
X
R
G
ON
AUTO
FAN
O
TH1/TC1 ANT
TC1
TH1
TH2
H
EM HT (RED)
B
TH2 ANT
ROOM THERMOSTAT
218/Y
217/GY
216/W
215/O
C
POWER SUPPLY
WITH ELEC HEAT
208/230-1-60
USE COPPER
CONDUCTORS ONLY
POWER SUPPLY
WITH ELEC HEAT
208/230-1-60
USE COPPER
CONDUCTORS ONLY
105/R W/ALT
CAPACITORS
ONLY
SEE
TABLES
1 & 2
204/BR
SEE NOTE 7
219/BK
SEE NOTE 6
BLK
BLK
CCH
L1
T1
OPTIONAL CCH
S / P CONFIGURATION
BLK
BLK
CCH
L1
L2
D / P CONFIGURATION
T2
M1 - 2
DETAIL A
L
2
M
R
C
COMPR
RELAY
DFST
S TAT
M1
DETAIL B
FOR DEFROST
CONTROL
031-09104-000A
SEE DETAIL B
222/Y
BLU
BLU
DS