Component Close Up: Thermistor Resistances R-W
Resistances of Thermistors Manufacturers R-W
Following on from "Testing a boiler thermistor" in Thermistors, please use the readings in the table below as an approximate expected multimeter reading of different thermistors from from the respective model as indicated. Manufacturers include Ravenheat, Radiant, Saunier Duval, Sime, Viessman, Vaillant, Vokera, Worcester,
For further readings please click: Thermistor Readings A-B or Thermistor Readings C-P,
Manufacturer |
Model/Range |
Sensor Type |
Approx Temperature °C |
Expected Resistance Reading |
Approx Temperature °C |
Expected Resistance Reading |
Radiant |
RSF RCM RSM Ranges |
NTC Sensor |
25 |
10 k |
|
|
Ravenheat |
CSI Range |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
CSI 120 |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
HE Range |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
LS Range |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
RSF 82 ET |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
RSF 84ET |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
Silver Star |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Ravenheat |
White Star |
NTC Sensor |
20 |
12.5 k |
80 |
1.5 k |
Saunier Duval |
Combitek F23E |
NTC Sensor |
0 |
32.6 k |
100 |
680 |
Saunier Duval |
Ecosy 2 28E |
NTC Sensor |
0 |
35.4 k |
80 |
1.7 k |
Saunier Duval |
Ecosy SB, 24E & 28E |
NTC Sensor |
0 |
35.4 k |
110 |
749 |
Saunier Duval |
Isofast F28E,F35E,F28E/1 & F35E/1 |
NTC Sensor |
0 |
32.6 k |
80 |
1.2 k |
Saunier Duval |
Protherm 80EC 100EC |
NTC Sensor |
20 |
10 k |
|
|
Saunier Duval |
SD 623 |
High limit thermistor |
20 |
5-7 |
|
|
Saunier Duval |
SD30e |
NTC Sensor |
25 |
10 k |
80 |
2.5 k |
Saunier Duval |
Sylva FF 24E |
NTC Sensor |
0 |
32.6 k |
80 |
1.2 k |
Saunier Duval |
Thelia 623 |
NTC Sensor |
20 |
11 k |
60 |
2.5 k |
Saunier Duval |
Thelia 623 |
PTC Sensor |
20 |
40 |
60 |
8 k |
Saunier Duval |
Thema F SB 23E |
NTC Sensor |
0 |
32.5 k |
80 |
920 |
Saunier Duval |
Thema F23E, C23 combitek F32E |
NTC Sensor |
0 |
33 k |
80 |
1.2 k |
Sime |
Eco comfort HE + |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Format Combi 30HE |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Format System 25HE |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Friendly Format, Format 80E + 100E |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Murelle HE |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Planet Dewy/Super 4 WM |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Sime |
Super 90, Super 4 & Friendly |
NTC Sensor |
20 |
12 k |
80 |
1.6 k |
Vaillant |
eco TEC plus 612, 615, 618, 624 & 630 (System Boilers) |
NTC Sensor |
20 |
10 k |
|
|
Vaillant |
eco TEC pro 28, plus 824 & 831 (Combi Boilers) |
NTC Sensor |
20 |
10 k |
80 |
1.3k |
Vaillant |
Ecomax |
NTC Sensor |
25 |
2.2 k |
90 |
250 |
Vaillant |
Sine 18, VCW 242/221 range |
NTC Sensor |
30 |
2 k |
90 |
250 |
Vaillant |
Turbomax 242E |
NTC Sensor |
30 |
2 k |
80 |
270 |
Viessmann |
Vitodends 100 WB1A |
NTC Sensor |
15 |
20 k |
80 |
1.5 k |
Viessmann |
Vitodends 200 WB2A |
NTC Sensor |
15 |
20 k |
80 |
1.5 k |
Vokera |
Compact 24/28 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Compact 28 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Compact HE 25/29 |
NTC Sensor |
20 |
15 k |
82 |
1.5 k |
Vokera |
Compact HE 25/29 |
NTC Sensor |
20 |
15 k |
82 |
1.5 k |
Vokera |
Excell 80e & 96e all serial numbers |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Linea 24/28 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Linea 25-30-35 HE |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Linea 726 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Linea plus & Linea Plus AG |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Linea plus /726/730/735 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Maxin 24E/ 28E/24CF |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Mynute 10e/14e/16e/20e |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Option 24 |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Rain |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Sabre |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Synergy 29e |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
Syntesi 29/35/25/29/25e |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Vokera |
ProCombi A |
NTC Sensor |
20 |
10k |
82 |
1.5 k |
Vokera |
ProCombi A |
NTC Sensor |
20 |
10k |
82 |
1.5 k |
Vokera |
Excell |
NTC Sensor |
15 |
15 k |
82 |
1.5 k |
Wickes |
Wickes C80FF & C95FF |
PTC Sensor |
20 |
200 k |
80 |
2.5 k |
Worcester / Bosch |
350 |
NTC Sensor |
25 |
10 k |
|
|
Worcester / Bosch |
15-18 RI System |
NTC Sensor |
25 |
14 k |
82 |
1.5 k |
Worcester / Bosch |
24 CDI |
NTC Sensor |
20 |
30 k |
80 |
1 k |
Worcester / Bosch |
240RSF & 280RSF |
PTC Sensor |
20 |
1.5 k |
80 |
25 k |
Worcester / Bosch |
24i |
NTC Sensor |
20 |
33 k |
80 |
680 |
Worcester / Bosch |
24i/28i Junior |
NTC Sensor |
20 |
25 k |
80 |
1 k |
Worcester / Bosch |
280 RSF |
NTC Sensor |
20 |
25 k |
80 |
1.5 k |
Worcester / Bosch |
28Si II / RD 628 |
NTC Sensor |
20 |
30 k |
80 |
1 k |
Worcester / Bosch |
9.24 Electronic RSF Economy |
PTC Sensor |
5 |
8 k |
80 |
25 k |
Worcester / Bosch |
9.24 series |
NTC Sensor |
20 |
13 k |
80 |
3 k |
Worcester / Bosch |
Cdi range, Ci range, Si range & C1 |
NTC Sensor |
20 |
30 k |
80 |
1 k |
Worcester / Bosch |
Greenstar (all models) |
NTC Sensor |
20 |
14.7 k |
80 |
1.7 k |
Worcester / Bosch |
Greenstar (all models) |
Outside temp sensor |
-20 |
2.4 k |
25 |
436 |
Worcester / Bosch |
Greenstar Cdi |
NTC Sensor |
20 |
14 k |
80 |
1.5 k |