950.15.02.00
Dated 2021/09/10
- 15 -
GB
9
M a l f u n c t i o n s , c a u s e s a n d t r o u b l e s h o o t i n g
If an error message is output, it appears on the control unit display.
Please observe the corresponding instructions for the control unit.
Malfunction
possible cause
Remedy
Pump noise
Air in the system
Bleed
Volume flow rate
too low (
Δ
t too
high)
Insufficient water
pressure
Check pressure, increase if necessary
Calcification or
contamination in heat
exchanger
Decalcify, flush, replace
Contaminated throttle
valve bore
Clean throttle valve bore, see Maintenance
Non-return valve jammed Actuate pump at 100% in manual mode.
Target
temperature not
reached
Incorrect adjustment on
the control unit
Check settings
Heating element
not heating up
Controller not in
operation.
Check controller
Temperature sensor not
connected correctly or
faulty.
Check, replace if applicable
Pump faulty
Check, replace if applicable
STB tripped
Reset (below black cap in tubra
®
-eTherm
power)
LED
Meaning
Operating
state
Cause
Elimination
Lit green
Pump operational
Pump running
as configured
Normal operation
Flashing
fast
green
PWM version
Pump in
standby mode
Normal operation
Flashing
red/green
Pump is ready for
operation, but not
running
Pump will
automatically
restart once the
fault has been
eliminated
1 Undervoltage
V < 160 V
Overvoltage
V > 253 V
1. Check voltage
supply
195 V < V < 253 V
2 Module
overtemperature:
Motor
temperature too
high
2. Check media
and ambient
temperature
Flashing
red
Pump not working
Pump stopped
(blocked)
Pump will not
automatically
restart
Replace pump
LED off
No voltage supply
Electronics
without voltage
1. Controller to
pump connection
interrupted
1. Check cable
connection
2. LED is defective
2. Check whether
the pump is
running
3. Electronics are
defective
3. Replace pump
Pump information table: If the malfunction cannot be rectified, please contact a specialist or
Wilo factory service.
Summary of Contents for 951.15.00.00
Page 1: ...D tubra eTherm P Montage und Bedienungsanleitung...
Page 11: ...Art Nr 950 15 02 00 Stand 2021 09 10 11 D 5 4 2 Elektrischer Anschluss Kaskade...
Page 17: ...GB tubra eTherm P Assembly and operating instructions...
Page 27: ...950 15 02 00 Dated 2021 09 10 11 GB 5 4 2 Electrical connection cascade...
Page 33: ...I tubra eTherm P Istruzioni di assemblaggio e d uso...
Page 43: ...N art 950 15 02 00 Ultimo aggiornamento 2021 09 10 11 I 5 4 2 Collegamento elettrico cascata...
