10
Trouble shooting
Problems
Possible Reasons
Solutions
4
5
6
1
2
3
Poor display
Controller
wont turn on
Temperature
display is not
working
correctly
Radio without
sound
System alarm
7
Stops heating
after awhile
Bluetooth is
not paired
properly
Digital tube quality problem
Digital tube driver IC is
damaged
CPU burned out
The controller’s connection is
loose
Temperature sensor damaged
Check if other devices are
paired
Bluetooth driver module is
broken
The screen displays HH and
alarms
The screen displays E1 and
alarms
The screen displays EO and
alarms
Motherboard amplifier is
broken
Replace the display panel
Replace a new CPU
No power input
Check for power
Reconnect the control computer cable
Replace the temperature sensor
Disconnect the paired device
Check if the Bluetooth
version is compatible. The
system supports version 2.0
or 4.0
Use device with matcing version
Replace the 4-in-1 audio module
Excessive temperature
Sensor short circuit
The system has overload,
overcurrent protection
Temperature sensor partial
overheating
First check if there is an open circuit, if no
open circuit, restart current limit protec
-
tion
Check why the partial area is overheating
Sensor disconnected
Replace the motherboard
Radio module is broken
Speaker cable is broken
or the speaker is broken
Replace the 4-in-1 audio module
Replace the wire or replace the speaker
Applicable to Controller
Summary of Contents for FRB-2F3
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