Troubleshooting/Fault Remedy
AEROTOPT LOGON B WP61 Troubleshooting/Fault Remedy
Problem Cause
Remedy,
Action
Pre-heating for thawing
Following a pre-maturely interrupted thawing
attempt (see “maximum thawing time”), the hot
water is pre-heated during “disabled thaw-
ing” (message on the control unit “pre-heating for
thawing”). If there is an electric heating element
in the flow line or in the buffer/combination stor-
age, it will be switched on for support. After-
wards, thawing mode will be switched to auto-
matically.
Check the electric heating element connection
Electric heating element should be configured in the program-
ming menu
Heat pump disabled
Info about Parameter 8006 status HP
1. Disabled, outdoor temperature
2. Disabled,
external
External disablement on the part of the
power supply company / of the electric
utility company. Input voltage E6 has
dropped.
3. Disabled,
eco-mode
1. Outdoor temperature too low
2. Utility/power station blockage
No problem, HP continues to run when the disablement is
over. Check the functioning of the phase monitoring relay:
The green LED on the phase monitoring relay must be
illuminated when there is no disablement by the utility
company/power
station.
3. Summer
mode
12: PWW charge temp.
HP too low
The controller stores the potable water tempera-
ture at which the charging with the heat pump
was last interrupted when the heat pump
reached the high pressure, hot gas or maximum
switch-off temperature limit.
If the value is lower than the setting “PWH
charge temp HP minimum" (control line 7092),
the service symbol will appear in the display
and details of the service in the info line.
This parameter cannot be reset. If the minimum PWW charging
temperature is exceeded again the next time potable water is
charged, the service function will also be reversed. If it is still
not reached, the service message will remain.
1. Check placement of the of the B3 sensor
2. Setpoint too high for PWW temp.
3. Charging type activated with B3 and B31, switch to B3 only
4. Temperature transmission to PWW sensor
poor, improve with spring clamp
5. In the mother/child storage the PWW charge should
occur at different levels via a three-way valve.
6. Heat exchange area of the storage is too small
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