Evinox ModuSat FS 150, Installation Manual

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6.5 Pump Start-up - Wilo PWM Pump
The Wilo Pulse-width modulation (PWM) pump features dry running protection to eliminate
burn out and provides compliance with the 2015 pump efficiency regulations.
Description of the pump
The pump consists of a hydraulic system, a
glandless pump motor with a permanent
magnet rotor, and an electronic control
module with an integrated frequency
converter. The control module provides speed
control by a PWM signal from the ModuSat
control board and indicator LED to display the
pump operating status.
Please note: When the unit is switched over
to heating mode the pump will run for 2 mins
prior to the heating PICV opening , this is not
a fault in the unit but a normal control function
as the HIU asses the current heating circuit
flow temperature.
Pump LED – Description of Status
LED Indicators Diagnosis Status Remedy
Lights green Pump in operation Pump runs
according
its setting
Normal operation
Blinks quick
green
PWM model: Pump in standby Normal operation
Blinks red/
green
Pump in function
but stopped
Pump restarts by
itself after the fault
is disappeared
1. Low voltage
U<160 V
or
High voltage
U>253 V
1. Check voltage
supply
195 V < U < 253 V
2. Module overheating:
temperature
inside motor too
high
2. Check water and
ambient
temperature
Blinks red Pump out of
function
Pump stopped
(blocked)
Pump does not
restart by itself due
to a permanent failure
Change pump
LED off No power No power to pump 1. Pump is not connected
to power supply
1. Check cable
connection
2. LED is damaged 2. Check if pump is
running
3. Electronics are
damaged
Change pump