Instructions
EZ Boost
TM
System
8.3. EZ Boost BMQE fault finding chart
Fault
Possible Cause
Remedy
1. The BMQE does not run.
a) The GFI or the voltage-operated GFI has
tripped out.
Cut in the circuit breaker.
b) No electricity supply.
Contact the electricity supply company.
c) The motor protection has cut off the
electricity supply due to over-load.
Check whether the motor/pump is blocked.
d) The pump/cable is defective.
Repair/replace the pump/cable.
e) Over voltage has occurred.
Check the electricity supply.
2. The BMQE runs but gives no water.
a) The discharge valve is closed.
Open the valve.
b) The suction strainer is choked up.
Pull the pump out of the sleeve and clean the
strainer.
c) The pump is defective.
Pull the pump out of the sleeve and repair/
replace the pump.
3. The BMQE runs at reduced capacity.
a) The valves in the discharge pipe are
partly closed/blocked.
Check and clean/replace the valves, if neces-
sary.
b) The discharge pipe is partly choked
by impurities.
Clean/replace the discharge pipe.
c) The pump is partly choked by impurities.
Pull the pump out of the sleeve. Check and
clean or replace the pump, if necessary.
Clean the pipes.
d) The pump is defective.
Pull the pump out of the sleeve and repair/
replace the pump.
e) Leakage in the pipe work.
Check and repair the pipe work.
f) Under voltage has occurred.
Check the electricity supply.
4. Frequent starts and stops.
a) The supply voltage is unstable.
Check the electricity supply.
b) The motor temperature becomes
too high.
Check the water temperature.
8.2.1 EZ Boost Optional R100 Interface
The R100 remote control can be used as a supplement
for the installer and as an excellent troubleshooting tool.
Grundfos highly recommends the use of one for diagnos-
ing problems and accessing system information unavail-
able through other means. The R100 provides wireless
communication with the Controller.
Note: It is not necessary to use the R100 to operate the
system. The R100 offers additional features.
The R100 communicates via infrared light. During com-
munication, there must be visual contact between the
Controller and the R100. The best visual contact between
the two units is obtained by pointing the R100 at the lower
arrow button or by removing the front cover and pointing
the R100 at the right side of the Controller.
The R100 offers possibilities of altering factory settings
and reviewing operating status of the pump.
When the communication between the R100 and
Controller has been established, the red indicator light
in the On/Off button will flash.
For general use of the R100, see the operating
instructions included with it.
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