A.O. Smith BFC-120, Installation, User And Service Manual

Page: 103 / 126

Indication Cause Remark
Collector temperature too
high Temperature S
1
is greater than
T
collector max
.
You can let the message disappear
automatically by allowing the heating
fluid to cool down.
You can also manually eliminate the
message by pressing the RESET and
ENTER buttons simultaneously.
Non-drainback systems:
The solar systems pump runs at full power
for 10 minutes, pumping the fluid in the
solar system round. If T
col
> T
collector max
after this has elapsed, the pump will stop
running for 30 minutes. After 30 minutes,
the pump will start running again and the
controller of the solar heating system checks
whether T
col
is less than T
collector max
.
Drain-back systems:
The solar system's pump stops running
immediately (for 30 minutes). After
30 minutes, the pump will start running
again and the controller of the solar heating
system checks whether T
col
is less than
T
collector max
.
1.
2.
0311753_SGS_28-120_II_UKUK_V2.0 , 2017-05-03 103