Fuji Electric Time Delta-C FSV-2, Instruction Manual

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6.5. Error and remedy
6.5.1. Display error
State Probable cause
Nothing is displayed.
 Power supply is not turned on.
 Low power supply voltage
 Fuse is blown out.
 LCD error

Refer to “6.5.8. Remedying a hardware fault”.
 Reverse polarity of DC power supply
Upper side appears black.
 Low power supply voltage
 Reverse polarity of DC power supply
 LCD error

Refer to “6.5.8. Remedying a hardware fault”.
Irrational display
 Hardware error

Refer to “6.5.8. Remedying a hardware fault”.
Pale display
 Ambient temperature is low (-20  C or lower)  Increase temperature.
 LCD has reached the end of its service life.

Replace the LCD.
Entire display is blackish.
 Ambient temperature is high (50  C or higher)  Decrease temperature.
LCD characters are skipped.
LED does not come on
 Refer to “6.5.1.1. Checking the LCD/LED” for LCD/LED.
The dots on the LCD are missing or the LED does not come on.

Refer to “6.5.8. Remedying a hardware fault”.
LED is displayed in red.
(ST1 or ST2)
 Received wave is abnormal.
 Refer to “6.5.1.2. Checking the LED lit in red (1)”.
LED is displayed in red.
(ST2)
 Temperature is abnormal.

Refer to “6.5.1.2. Checking the LED lit in red (2)”.
6.5.1.1. Checking the LCD/LED
Follow the procedure shown below to check possible display errors.
Key operation Description Display
▼
Press the key for 4 times to display “MAINTENANCE MODE”.
MAINTENANCE MODE
ENT
▼
Press the
ENT
key once to display “RAS INFORMATION”.
RAS INFORMATION
0000000000000000
▼
Press the key for 16 times (14 times for 2-pipe mode) to display
“LCD/LED CHECK”.
LCD/LED CHECK
ENT
▼
Press the
ENT
key once.


Lit in red
▼
Every time the key is pressed, the display is switched in the order
shown below.
LCD: OFF completely LED: Lit in green
LCD: Darkened
LED: Lit in red
If dots on the LCD are missing or the LED does not come on, the
LCD/LED may have failed.

 Lit in green
ESC
Obtain a measurement-mode display using the
ESC
key and the
key.
0.000 m/s
0.000 m3/h