IM213D-MC Issue 10 © 2017 Page 7 of 8
Troubleshooting Guide
Problem
Cause
Remedy
Fluid will not flow
through meter
a) Foreign matter blocking rotors
b) Damaged rotors
c) Meter connections over tightened
d) Fluid is too viscous
a) Dismantle meter, clean rotors
b) Replacement rotor assembly required.
c) Re-adjust connections
d) See specifications for maximum viscosity
Reduced flow
through meter
a) Partially blocked
b) Fluid is too viscous
a) Check and clean meter.
b) See specifications for maximum viscosity
Meter reading
inaccurate
a) Fluid flow rate is too high or too low
b) Air in fluid.
c) Excess wear.
a) See specifications for minimum and maximum flow rates
b) Bleed air from system
c) Check meter body and rotors. (see instructions)
Meter not giving a
pulse signal
a) Faulty hall effect sensor
b) Faulty reed switch
c) Magnets failed
a) Replace PCB Board
b) Replace PCB Board
c) Replacement rotor assembly required
LCD register not
working
a) Battery flat
b) Faulty LC Display
a) Replace battery
b) Replace PCB module
WEEE Directive - Waste Electrical and Electronic Equipment
The WEEE Directive requires the recycling of waste electrical and electronic
equipment in the European Union.
Whilst the WEEE Directive does not apply to some of Macnaught’s products, we
support its policy and ask you to be aware of how to dispose of this product.
The crossed out wheelie bin symbol illustrated and found on our products signifies that
this product should not be disposed of in general waste or landfill.
Please contact your local dealer national distributor or Macnaught Technical Services
for information on product disposal.
