Flashes (Incorrect Polarity Of L1/L2) - Bosch BGH96 Troubleshooting Manual

2 0 | Bosch 96% AFUE Gas Furnace

3.6 9 Flashes (Incorrect Polarity of L1/L2)

Troubleshooting Chart
Figures
BLOWER DOOR
SWITCH
BLK BLK
WHT WHT
GND
115V FIELD-
SUPPLIED
DISCONNECT
Figure 23
Data subject to change
W
C
R
O
N
T
GND
R
G
O
J-BOX
C
L
Y
24V
TERMINAL
BLOCK
FURNACE
Start
Correct the wire
connection(black
and white wire)
according to
wiring diagram.
See Figure 23.
Troubleshooting Guide
01.2019 | BTC 770502101 A