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JP FJH-4/1C-E - Page 26

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JP Heater
22
6. Failure
6.1 General Failure Handling
6.1.1 During the use of the heater, it may appear that it
cannot start normally or turn off itself after starting and is
in the fault lock state. At this time, the heater can be turned
off for more than 5S and restart.
6.1.2 The heater may cause circuit failure due to the
following reasons: the connector is rusted, the poor
contact, the plug is incorrect, the wire or fuse is rusted,
the battery pile is rusted, etc.
Pay attention to inspection, maintenance and prevent
these phenomena from occurring during use.
6.1.3 When the following conditions occur, it can be
handled and eliminated by the user:
The heater does not start after the power is turned on
and the LCD switch screen does not light. The reason is
that the fuse is open, or the wiring is wrong. In addition,
check whether the plug on the LED switch lead wire is
properly connected to the host.
6.2 Fault Lock Status
6.2.1 The fault generated by the heater is indicated by
the fault code on the LED switch.
6.2.2 The faults can be eliminated according to the
methods listed in Table 2.
Fault Lock Status Debug Method
Fault
Code
Fault Name
Fault Debug Method
10
Over-voltage fault
a. Check vehicle power supply system
11
Under voltage fault
a. Check vehicle power supply system
21
Warm air outlet temperature sensor disconnection
a. Check if the sensor is in good condition
22
Warm air outlet temperature sensor short circuit
a. Check if the sensor is in good condition
23
Water temperature sensor disconnection
a. Check if the sensor is in good condition
24
Water temperature sensor short circuit
a. Check if the sensor is in good condition
25
External temperature sensor disconnection
a. Check if the sensor is in good condition
26
External temperature sensor short circuit
a. Check if the sensor is in good condition
Table 2