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US/CA
Display (
Item 1, 3 and 4 in fig. 29)
Text
Fault 55
Solar system not yet commissioned
Fault 56
At least one pump/valve in manual mode
Fault 59
Flow rate in solar system too high/low.
1) The display text is shown on the BUS device (e.g. remote control) that detected the fault. On the
other BUS devices, instead of this, the code is displayed and corresponds to the display test.
Code Cause
146
Solar system is not yet in
operation.
147
Pump (SP) in manual mode.
148
Valve (DWU1) in manual mode.
150
Pump (PA) in manual mode.
151
Pump (PB) in manual mode.
152
Pump/valve (PC/DWUC) in
manual mode.
153
Pump (PD) in manual mode.
154
Pump (PE) operated manually.
201
Flow rate in solar system for
collector field 1 is too high.
202
Flow rate in solar system for
collector field 1 is too low.
203
Flow rate in solar system for
collector field 2 is too high.
204
Flow rate in solar system for
collector field 2 is too low.
Troubleshooting | 93
Remedy (by installer)
Fill, bleed and prepare the
solar thermal system for
commissioning according to its
documentation. Then start up
the solar system.
Reset parameters for pump or
valve to "Auto".
Set flow rate in solar circuit
correctly (e.g. increase/reduce
pump speed) or, if necessary,
further open or close flow
setter on the solar pump
station.
Target: 0.22 gpm (50 l/h) of
collector.
Check that the settings match
the collector area, type and
location factor in the solar
optimization menu.
6 720 643 256 (2010/05)
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