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TROUBLESHOOTING
DISPLAY SHOWS
POSSIBLE CAUSES
F12 Service needed –
check booster thermo-
Faulty temperature probe (T3).
stat
1. Loose connection in 6-pin cable between
display board and IO module.
2. Faulty 6-pin cable between display board
F13 Communication er-
and IO module.
ror. Check 6-pin cable
3. Faulty communication port on IO module or
display board.
TABLE 1: RESISTANCE-TO-TEMPERATURE VALUES
21
REMEDY
Replace probe that connects to P13.
1. Fully disconnect 6-pin cable at each end, and reconnect
each end until a click is heard.
2. Inspect for broken wire or unseated terminal by gently
pulling on each wire at each end of the cable. Reseat any
loose terminals by inserting it fully into the housing using
long-nosed pliers. Replace cable if broken wire is found.
3. Temporarily substitute a verified good display board, and
check if F13 message recurs. If so, repeat substitution with
a good IO module.
R (kΩ)
11.58
69.8
10.37
75.2
9.30
80.6
7.78
89.6
3.05
140.0
2.54
150.8
2.18
159.8
1.58
179.6
1.45
185.0
1.33
190.4
1.16
199.4
0.96
212.0
FAULT CODES
°F
07610-004-29-29-A
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