Ariston microSYSTEM 10 RFFI Servicing Instructions

[Page 1] Ariston microSYSTEM 10 RFFI

Servicing Instructions Type C Boilers G.C.N: 41-116-04 LEAVE THESE INSTRUCTIONS WITH THE END-USER Country of destination: GB ...

[Page 2] Ariston microSYSTEM 10 RFFI

2 1. SERVICING INSTRUCTIONS 1.1 REPLACEMENT OF PARTS 1.2 TO GAIN GENERAL ACCESS - Removing the front panel - Removing the sealed chamber front cover - Removing the side panels 1.3 A CCESS TO THE COMBUSTION CHAMBER - Removing the combustion cover - Re...

[Page 3] Ariston microSYSTEM 10 RFFI

2. The control panel moves downward and when pulled forward, rotates on two lateral hinges; the panel stays in a semi- horizontal position, which allows access to the inner parts of the boiler (F IG. 1.2); 3. In order to increase the manouvering spac...

[Page 4] Ariston microSYSTEM 10 RFFI

4 1.2.2 Removing the sealed chamber front cover 1. Remove the screws “C” (FIG. 1.6); 2. Lift the sealed chamber front cover from the locating pins (FIG. 1.7). FIG. 1.6 C C FIG. 1.7 1.2.3 Removing the side panels 1. Remove the four screws “D” ...

[Page 5] Ariston microSYSTEM 10 RFFI

1.3.3 Removing the electrodes Before carrying out this procedure, unscrew and slide the burner forward (see previous section). 1. Remove rubber gasket “G” (F IG. 1.12); 2. To remove the detection electrode disconnect the cable at its connection p...

[Page 6] Ariston microSYSTEM 10 RFFI

6 3. Remove screw “H” (F IG. 1.14); 4. Gently slide the electrode downward (FIG. 1.15). To replace, repeat the steps in reverse order, paying particular attention to the following: a -Centre the electrode in the positioning hole carefully, otherw...

[Page 7] Ariston microSYSTEM 10 RFFI

1. Disconnect electrical connections “N” and silicon pipe “O” (F IG.1.22); 2. Remove screw “P” and remove the fan collar clamp “Q” (FIG .1.23); 3. Remove screws “R” (F IG.1.24); 4. Remove fan and mounting plate (FIG.1.25). 1.3.6 R...

[Page 8] Ariston microSYSTEM 10 RFFI

8 1.4 SERVICING AND REMOVAL OF THE GAS VALVE 1.4.1 Setting the gas pressures 1 2 3 A B C F D Setting the maximum power of the boiler 1. Check that the supply pressure to the gas valve is a minimum of 20 mbar for natural gas. Turn off the gas supply a...

[Page 9] Ariston microSYSTEM 10 RFFI

9 1.22 20 8.3 2.9 2.9 ---- ----- ----- 0.91 Kg/h ------ Kg/h 22.9 mbar ---- mbar 28 mbar 0.90 Kg/h ------ Kg/h 29.5 mbar ---- mbar 37 mbar 6 x 1.30 6 x 0.77 6 x 0.77 Gas restrictor ¿ 10 RFFI TABLE A TB016A 6. Remove the pipe from the press...

[Page 10] Ariston microSYSTEM 10 RFFI

10 F IG. 1.28 FIG. 1.29 U V V 1.4.3 Removing the gas valve Impor tant! Before removing the gas valve, ensure the gas supply is turned off. 1. Disconnect all the cables from the solenoid and modureg; 2. Remove the spark generator (see previous section...

[Page 11] Ariston microSYSTEM 10 RFFI

11 1. 5. 2 Removing the safety valve 1. Loosen nut “Y” (F IG. 1.33); 2. Disconnect the discharge pipe work from below the boiler; 3. Unscrew and remove the valve. 1.5.3 Removing the automatic air vent 1. Unscrew valve top “Z” (FIG. 1.34); 2. ...

[Page 12] Ariston microSYSTEM 10 RFFI

12 1.5.4 Removing the pump 1. Remove the U-clips “ A1” and “B1” (F IG. 1.36); 2. Remove the retaining clip “C1” (FIG. 1.37); 3. Release the nut “D1” (FIG. 1.38); 4. Remove the pipe “E1” (F IG. 1.39); 5. Remove the screw “F1” (...

[Page 13] Ariston microSYSTEM 10 RFFI

13 1.5.6 Removing the expansion vessel 1. Release nuts “H1” and remove the gas pipe (F IG. 1.44); 2. Release nut “I1” (FIG. 1.45); 3. Remove lock-nut “J1” (FIG. 1.46); 4. Remove the expansion vessel (F IG. 1.47). 1.5.5 Removing the pressu...

[Page 14] Ariston microSYSTEM 10 RFFI

14 1.5.6 Removing the overheat thermostat 1. Disconnect the overheat thermostat electrical connections “K1” (F IG. 1.48); 2. Then remove the thermostat from its mounting by releasing the securing clip (F IG. 1.49). 1.5.7 Removing the frost thermo...

[Page 15] Ariston microSYSTEM 10 RFFI

15 1.6.2 Removing the P.C.B.s 1. Isolate electricity; 2. Remove the screws “O1” (F IG. 1.56); 3. Separate the facia panel from the rear of the control panel; 4. Unplug all electrical connections from the P.C.B. and remove the screws “P1” and ...

[Page 16] Ariston microSYSTEM 10 RFFI

16 B063 2. FAULT FINDING P RELIMINARY CHECKS MAKE SURE THAT : IS THE SUPPLY L.E.D. ILLUMINATED? IS THE L.E.D. ILLUMINATED? NO NO NO YES NO 1 - CHECK THE FUSES 2 - CHECK THERE IS POWER SUPPLIED TO THE P.C.B.S 3 - CHECK/REPLACE THE P. C . B . (CT1) 1 ...

[Page 17] Ariston microSYSTEM 10 RFFI

17 B063 IS THE PUMP RUNNING? NO YES POWER T O THE PUMP? 1 - CHECK THE OPERATION OF THE PUMP 2 - RELEASE/REPLACE THE PUMP 1 - CHECK THE PUMP CABLE 2-CHECK/REPLACE P. C. B . (CT1) 3 - CHECK THE SYSTEM PRESSURE GAUGE IS AT 1.5 BAR A IS THE FAN RUNNING?...

[Page 18] Ariston microSYSTEM 10 RFFI

18 B063 IS THE BURNER ALIGHT? YES NO YES YES BOILER WORKING? YES NO NO NO NO YES 5-CHECK/REPLACE P.C.B. (CBM2) 4-C HECK/REPLACE P.C.B. (CBM2) 4 - C HECK/REPLACE P.C.B. (CBM2) 1 - C HECK/REPLACE IGNITION ELECTRODES 2 - CHECK THE CABLES 3 - CHECK SPAR...

[Page 19] Ariston microSYSTEM 10 RFFI

19 B063 3. ELECTRICAL DIAGRAMS SE011A L EGEND: A - On/Off Switch B - On/Off L.E.D. C - Heating Switch D - Heating L.E.D. E - Reset Button F - Ignition Failure (Lockout) L.E.D. A01 - Pump Pressure Switch A02 - Frost Thermostat A03 - Modulator A04 - Ci...

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20 B063 SF008A ...

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21 B063 MODELS CHARACTERISTICS SERIAL NO: VALIDITY REF. MICROSYSTEM 10 RFFI METHANE 2320021100001 A MICROSYSTEM 10 RFFI LPG 2320021100001 B MICROSYSTEM 15 RFFI METHANE 2320021100001 C MICROSYSTEM 15 RFFI LPG 2320021100001 D 1324 30 31 37 13 19 2...

[Page 22] Ariston microSYSTEM 10 RFFI

22 B063 998616 573521 573520 570760 998612 573528 998447 569390 998627 999542 574279 999474 998809 999476 998424 998836 999578 999499 999245 998517 998484 997182 999538 998624 998622 998623 998893 999481 999686 999479 999685 998433 998434 999501 950...

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23 B063 NOTES ...

[Page 24] Ariston microSYSTEM 10 RFFI

23 99 84 1582 000 - Manufacturer: Merloni TermoSanitari SpA - Italy Commercial subsidiary: MTS (GB) LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone: (01494) 755600 Fax: (01494) 459775 Internet: http://www.mtsgb.ltd.uk E-...