Specifications

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6720649497 SM HP270-1 2012/09 en
The NTC’s listed in the table above, are supplied in a common cable with the following configuration:
(A) model -10ºC / +35ºC (B) model +5ºC / +35ºC
Pict.24 – NTC cables
The NTC sensors for air, cold and hot water are the same, but give different information to the software in the
electronic control. Following table indicates the measurable resistance value to check and identify each proper
function.
These NTC sensors are a 10kΩ type. In case their minimum and maximum operation values are below or above
the expected temperature/resistance values, the display will present the correspondent error code.
The NTC sensor in the fins is 8kΩ with characteristic listed on table 3.
Temperature (ºC)
NTC Resistance (Ω)
(10kΩ type)
(fins)
NTC Resistance (Ω)
(8kΩ)
(air + cold + hot)
-10 37450 55330
-5 29710 42320
0 23730 32650
5 19090 25390
10 15450 19900
15 12580 15710
20 10310 12490
25 8495 10000
30 7037 8057
35 5860 6531
40 4905 5327
45 4125 4369
50 3485 3603
(A) (B)