Func
tio
n
Defaul
t
val
ue
Max
Unit
Oper
a
tin
g
line
Oper
a
tin
g
level
Min
8451 F
Start counter compressor 1
0
0
199'999
-
8452 F
Hours run compressor 2
0
0
199'999
h
8453 F
Start counter compressor 2
0
0
199'999
-
8454 F
Locking time HP
0
0
199'999
h
8455 F
Counter number of locks HP
0
0
199'999
-
8456 F
Hours run el flow
0
0
199'999
h
8457 F
Start counter el flow
0
0
199'999
-
8469 F
Fan speed
0
0
100
%
8470 I
Fan
Off ¦ On
Off.
-
8471 I
Process reversing valve
Off ¦ On
Off.
-
8475 I
Evaporator temp
0
-50
50
°C
8477 I
Temp diff defrost act value
0
-50
50
°C
8478 I
Temp diff defrost setpoint
0
-50
50
°C
8480 I
Remain time defrost lock
0
0
255
min
8481 I
Remain time forced defrost
00:00 00:00
07:00
h/min
8485 I
Number defrost attempts
0
0
10
-
8505 F
Speed collector pump 1
0
0
100
%
8506 F
Speed solar pump ext exch
0
0
100
%
8507 F
Speed solar pump buffer
0
0
100
%
8508 F
Speed solar pump swi pool
0
0
100
%
8510 I
Collector temp 1
-
-28
350
°C
8511 I
Collector temp 1 max
200
-28
350
°C
8512 I
Collector temp 1 min
-28
-28
350
°C
8513 I
dT collector 1/DHW
0
-28
350
°C
8514 I
dT collector 1/buffer
0
-168
350
°C
8515 I
dt collector 1/swimming pool
0
-168
350
°C
8519 I
Solar flow temp
0
-28
350
°C
8520 I
Solar return temp
0
-28
350
°C
8526 I
24-hour yield solar energy
0
0
999.9
kWh
8527 I
Total yield solar energy
0
0
9999999.9
kWh
8530 F
Hours run solar yield
0
0
199'999
h
8531 F
Hours run collect overtemp
0
0
199'999
h
8543 F
Speed collector pump 2
0
0
100
%
8547 I
Collector temp 2
0
-28
350
°C
8548 I
Collector temp 2 max
-28
-28
350
°C
8549 I
Collector temp 2 min
350
-28
350
°C
8550 I
dT collector 2/DHW
0
-168
350
°C
8551 I
dT collector 2/buffer
0
-168
350
°C
8552 I
dt collector 2/swimming pool
0
-168
350
°C
Diagnostics consumers
8700 E
Outside temperature
-
-50.0
50.0
°C
8701 E
Outside temp min
-
-50.0
50.0
°C
8702 E
Outside temp max
-
-50.0
50.0
°C
8703 I
Outside temp attenuated
-
-50.0
50.0
°C
8704 I
Outside temperature composite
-
-50.0
50.0
°C
8720 I
Relative room humidity
-
0
100
%
8721 I
Room temperature
-
0
50
°C
6)
6)
74/258
Siemens Switzerland Ltd
User manual RVS61.843, RVS41.813
CE1U2355en_02
HVAC Products
5 Handling
28. September 2009