To Install The Water Filter; 12 Troubleshooting; Overview: Troubleshooting; Precautions When Troubleshooting - Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual

12 Troubleshooting

c
b
c a
a Rolled‑up filter
b Strainer
c Protrusion
5 Install and properly tighten the bottom of the water filter
housing.
11.5.3

To install the water filter

CAUTION
Check the condition of the O-rings and replace if needed.
Apply water to the O-rings before installation.
1 Install the water filter in the correct location.
c
a
a
b
a Clip
b Magnetic filter/dirt separator
c Air purge valve
2 Install the 2 clips to fix the water filter to the water circuit pipes.
3 Make sure that the air purge valve of the water filter is in the
open position.
4 Open the valve (if equipped) of the water circuit towards the
expansion vessel.
CAUTION
Make sure to open the valve (if equipped) towards the
expansion vessel, otherwise the overpressure will be
generated.
5 Open the stop valves and add water to the water circuit if
needed.
12 Troubleshooting
Contact
For the symptoms listed below, you can try to solve the problem
yourself. For any other problem, contact your installer. You can find
the contact/helpdesk number via the user interface.
12.1

Overview: Troubleshooting

This chapter describes what you have to do in case of problems.
Installer reference guide
86
It contains information about:

▪ Solving problems based on symptoms

▪ Solving problems based on error codes
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for
obvious defects such as loose connections or defective wiring.
12.2

Precautions when troubleshooting

WARNING
▪ When carrying out an inspection on the switch box of
the unit, ALWAYS make sure that the unit is
disconnected from the mains. Turn off the respective
circuit breaker.
▪ When a safety device was activated, stop the unit and
find out why the safety device was activated before
resetting it. NEVER shunt safety devices or change
their values to a value other than the factory default
setting. If you are unable to find the cause of the
problem, call your dealer.
DANGER: RISK OF ELECTROCUTION
WARNING
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
DANGER: RISK OF BURNING
12.3 Solving problems based on
symptoms
12.3.1 Symptom: The unit is NOT heating or
cooling as expected
Possible causes
The temperature setting is NOT
correct
Corrective action
Check the temperature setting on
the remote controller. Refer to
the operation manual.
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10