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9 Faults and Warnings
Gardner Denver
36
Display
Possible Cause
Remedy
Warning A627:
Water change drain
Error during water change in discharge
phase:
Solenoid valve for water outlet faulty.
Check.
Dirt trap in front of solenoid valve dirty.
Check dirt trap.
Outlet ball valve closed?
Open ball valve.
Faulty water level sensor B10.
Check level sensor and wiring.
Warning A628:
Water change supply
Error during water change in intake phase:
Poor supply of water for machine, water
pressure may be too low.
Check water pressure.
Water treatment unit faulty.
Check.
Solenoid valve for water inlet faulty.
Check.
Faulty
water level sensor B10.
Check level sensor and wiring.
9.8
Warning Numbers A700 .. A731
(VSD-related)
Warning Numbers A700 .. A731
Display
Possible Cause
Remedy
Warning A700:
VSD Temperature High
Frequency converter (VSD) temperature
close to trip temperature.
Check filters of switch gear cabinet, and
renew if necessary.
Ensure that electric motor-driven switch
gear cabinet fans (if any) and frequency
converter fans are working correctly.
Check frequency converter for blockages
in the cooling air supply and dirty cooler
fins.
9.9 Others
Possible Cause
Remedy
A fault/warning cannot be acknowledged.
Fault/warning still in place.
Find cause and remedy.
Pressure and temperature indicator failed,
indicator (---)
Ground fault or short circuit for sensor
B1, B2 or R2.
Find cause and remedy.
Incorrect display of volume flow
Volumetric flows incorrectly set.
Check setting max. and min. volume
flow in
Configuration
Menu (see
chapter 7.2).
Unit not automatically starting after power
loss.
Automatic restart after power failure is
not enabled. Power loss lasted too
long.
(1)
Enable.
Unit runs continuously in off-load without
independently switching to readiness
(stand-by).
Continuous Operation mode
elected.
(1)
Very brief pressure requirements
during the run-on time.
Select Automatic Operation mode.
1)
Unit-specific setting: See
Control
Menu.
VS