VENCO VHR Series, Installation, Operation, & Maintenance Instruction

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step for defrosting. After defrosting, the device will return to its normal run conditions. Under these
circumstances ‘’AL 01’’ will be shown on screen. Commands from the front panel will not run.
When the optional filter sensor detects dirty filters
, ‘’AL 03’’ warning will be shown on screen. When this warning
is shown, the device will work properly, however the warning will be shown until filters are cleaned.
When power is on,
press the button “ ” for 10s till to display “hh:mm” and “hh” flash
,
press “ ” or “ ”
to adjust hour. Press “ ”, “mm” flash, press “ ” or “ ” to adjust minute. Press “ ”, “week” flash,
press “ ” or “ ” to adjust Mon to Sun.
After adjusting the above settings, to adjust timer settings
press “ ” till to display “MON” and “ON”, and also
“hh” flash, press “ ” or “ ” to adjust hour, press “ ” till “mm” flashes, press “ ” or “ ” to adjust
minute; Press “ ” till “mm” flashes , press “ ” or “ ” to adjust minute; Press “ “ till to display “MON”
and “OFF, andalso”hh” flash, press “ ” or “ ” to adjust hour, press “ ”, “mm” flash, press “ ” or “
” to adjust minute. The setting method is same for other days.
15. TROUBLESHOOTING
Table15.1. Troubleshooting Table
PROBLEM INDICATIONS POSSIBLE REASON
OTHER REASONS and
REMEDIES
NO AIR
FLOW
Motor is not
working
No current
No power Check the power supply
Thermal protection is open
Fan motor cables at the
main controller board are not
tight
Control panel failure
Check the socket behind the
the controller
LOW AIR
FLOW
Pressure loss in the ducts are
higher than calculated
Check the duct design
Filters clogged or dirty
Clean filter or change it if
necessary
Too much leakage at the
pressure side of system
Filter doors are not closed or
duct connections are not
completed
Check the doors and duct
connections.
HIGH AIR
FLOW
Too much leakage at the
suction side of system
Duct connections are not
completed
Check the duct connections
Overcurrent of fan motors
Supply voltage is low
Engine is over loaded.
Measure the current taken
by engine.
Grills are not installed Install the grills
16.
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