instruction manual - HBDF –mk2 – defrost sensor (013-UK) 19/03-2019 WWW.HBPRODUCTS.DK
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WE INCREASE
UPTIME
AND
EFFICIENCY
IN THE REFRIGERATION INDUSTRY
LED indication
1)
Green LED, flash indicates power supply, And DI external start signal is ON.
2)
Red LED indicates Defrost mode or sensor error (Outside measuring range).
LED signal
ON/OFF/Frequency
Functionality
Green
On or flash
Supply voltage connected
Flash (Run-In mode)
Run-in start signal / operation.
OFF
No supply voltage
Red
Flash
Defrost mode “ start”
Flash quickly
Defrost mode “stop”
OFF
Defrost fan/sensor delay (timer end)
Fault Detection
Fault
Reason
Correction of fault
No LED is on / no function
No supply to the sensor or defective
cable.
Check for fault in the power supply or
replace the supply cable.
Red LED are flashing
Power supply is too small.
Install a power supply with a capacity
of at least 30 W.
No AO, mA output or Relay contact
activation
There may be bad ground
connection to the frame.
Clean the metal surface and protect it
with special compound/grease.
Practical measurement of output signals: 4-20 mA signal: Function and stability of the 4-20 mA signal can be checked
by connecting a hand-held multimeter. If the supply is connected and the power LED flashes and there is no output
signal, the electronics may be defective.
