Frigidaire FFLE3911QW Technical & Service Manual page 156

15.14 Alarms Summary Table
Alarm
S. NO. Alarm Code
Description
17 E5C Motor control
over voltage
18 E5D Motor Control
Board Unknown
Message
19 E5E Motor control
to main board
communication
incorrect
20 E5F Motor Control
Board Fault
21 E71 Washing NTC
failure
22 E87 User Interface
microcontroller
fault
23 E91 User interface
and Main Board
communication
error
24 E92 User interface
and Main Board
protocol
incongruence
error
Fault
Possible Fault
Condition
DC bus voltage High input AC voltage
above the
Motor control board
maximum
(430V)
Message Communication wiring
received by
Motor control board
Motor Control
Main board
Board is not
Software not matching
correct
Communication Wiring
between Motor
Motor control board
Control Board
Main board
and main board
User interface board
incorrect
Motor Control Wiring
Board control
Motor control board
board is
Main board
continuously in
reset
Wrong input Wiring open
signal to
Washing NTC
microprocessor
Wiring or main board
(open circuit or
short circuit)
User interface User interface
microcontroller
damaged
Communication Wiring
problem
User interface
between user
Main Board
interface and
Motor control board
Main Board
Protocol Main board
communication
User interface board
between user
interface and
Main Board not
compatible
155
Action
Machine Action/
to
Status
Clear
Cycle abort ON/OFF
RESET
None -
Cycle ends ON/OFF
RESET
Cycle ends ON/OFF
RESET
Water load not START
temperature
RESET
controlled
No actions to be START
performed. If still
ON/OFF
present replace
RESET
the User Interface
Board
- RESET
Cycle blocked OFF/ON 187
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