Spare Parts; Fault Finding - Saunier Duval ISOFAST F 28 E Installation And Operating Instructions Manual

FAULT FINDING

Thermistor values
The following table applies to the central heating,
domestic hot water and storage vessel thermistors:
Temperature ( C)
0 ...................................... 32565
5 ...................................... 25345
10 ..................................... 19875
15 ..................................... 15700
20 ..................................... 12500
25 ..................................... 10000
30 ...................................... 8060
35 ...................................... 6535
40 ...................................... 5330
45 ...................................... 4370
50 ...................................... 3605
55 ...................................... 2989
60 ...................................... 2490
65 ...................................... 2085
70 ...................................... 1755
75 ...................................... 1480
80 ...................................... 1260
85 ...................................... 1070
90 ....................................... 920
95 ....................................... 785
100 ...................................... 680

SPARE PARTS

When ordering spare parts, quote the part number and description, stating the appliance model number
and serial number from the data badge.
Short parts list
No. Description
1 ............... Domestic hot water thermistor ................................ 57213
2 ............... Central heating thermistor ....................................... 57215
3 ............... Storage vessel thermistor .......................................... 57250
4 ............... Fan .............................................................................. 57238
5 ............... Air pressure switch ..................................................... 57237
6 ............... Domestic water flow sensor ..................................... 57202
7 ............... Printed circuit board ................................................. 57248
8 ............... Pump ........................................................................... 57207
9 ............... 3-way valve head ..................................................... 57206
10 ............. System pressure sensor .............................................. 57205
11 ............. Gas valve module ..................................................... 57079
12 ............. Central heating safety valve ................................... 57228
13 ............. Storage vessel safety valve ...................................... 57229
14 ............. High limit thermostat ................................................. 57212
15 ............. Ignition electrode ...................................................... 57194
16 ............. Flame sense electrode ............................................. 57195
17 ............. Clock ........................................................................... 57245
Resistance ( )
System pressure sensor
The resistance of the sensor at various pressures is
as follows :
0 bar ...................... between 280
1 bar ...................... between 195
3 bar ...................... between 93
Part No.
and 320
and 220
and 143
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