34
FA ROTEX Solaris RPS4 -
04/2016
7
x
Faults and malfunctions
In the Solaris R4 regulator, the T
R
light flashes.
Return temperature "T
R
" is greater than 40°C and is 10 K higher
than the storage temperature "T
S
". The solar operating pump P
S
is switched off. The cause is a defective or incorrectly connected
sensor.
Ɣ
Install the sensor correctly or replace it; normal system
operation will be resumed.
In the status column of the Solaris R4 regulator, "W" flashes.
The minimum flow rate start phase "V1" at the FlowSensor (see
page 22, tab. 6-1) is not achieved after switching on the solar
operating pump P
S
and expiry of the time defined via the
parameter [time P2] (fig. 6-3).
Î
The system goes to temporary blocking for 2 hours (solar
operating pump P
S
is switched off), but still tries to restart
automatically after the blocking time.
Î
If this event occurs three times in a row, without interme-
diate starting, the solar operating pump P
S
is switched off
for an extended period and the status "F" is set.
In the status column of the Solaris R4 regulator, "F" flashes.
The minimum flow rate start phase "V1" at the FlowSensor (see
page 22, tab. 6-1) is not achieved after switching on the solar
operating pump P
S
and expiry of the time defined via the
parameter [time P2] (fig. 6-3). The solar operating pump P
S
is
switched off.
Ɣ
If a leak is suspected, examine the solar system, rectify faults
and then release the block by "Switching OFF/ON" on the
controller.
If the system cannot be filled (
Status "F"
), even though the solar
operating pump P
S
is actuated by the regulator, the following
faults can be the cause:
1. Air drawn down when the system was running idle is in the
solar operating pump P
S
.
Ɣ
Check that the solar operating pump P
S
is running.
The automatic vent must always be working! Check the
sealing cap and loosen it if necessary (do not remove).
2. Check the installation for leaks.
Ɣ
Check the installation for leaks and rectify if necessary.
Follow instructions in section 5 "Start-up and decommis-
sioning"".
3. The start run time [time P2] (chap. 6.4).
4. Check the installation for blockage. In frosty conditions, ice
plugs can form in incorrectly run connecting pipes.
5. Check valve position on storage tank connection elbow.
If the
display shows nothing
and the main switch is in the illumi-
nated "ON position":
Ɣ
Replace the control unit (electronic fault).
If the main switch is not illuminated in the "On" position, there is
no power supply to the control unit.
Ɣ
Check the plug connection of the mains plug and the mains
connection (fuse, switch).
If water vapour is continuously coming out
of the solar
storage tank
when sunlight impinges
, the flow rate is too small.
Ɣ
In this case, the system settings must be checked.
Special notes on electric sensors
Ɣ
Evaluate the display of the Solaris R4 regulator.
Ɣ
Remove casing of the Solaris R4 regulator and remove and
disconnect the relevant sensors.
Ɣ
Examine the contact positions of the affected sensors, and
measure the resistance (or the DC voltage for flow temper-
ature and flow rate sensors) on the sensor end.
When the fault has been rectified, the system automatically re-
sumes normal operation and is in the operating mode.
The resistance or DC voltage values of the sensors are listed in
fig. 9-1 and in fig. 9-2. Internal faults in the controller electronics
that can be diagnosed are displayed in the display in accordance
with tab. 7-1 (
Status "G"
). They also cause a safety switch-off of
the pumps. Switching the system off and then on again after
2 minutes might remedy the fault; if not, the control unit must be
replaced.
CAUTION!
Danger of burning on hot surfaces.
Ɣ
Let the device cool down for a reasonably
long time before maintenance and inspection
work.
Ɣ
Wear protective gloves.
Only original ROTEX replacement parts may be used.
