Riello RS 190/M Instructions Pour Installation, Utilisation Et Entretien page 41

Signal
No blink The burner does not start
The burner continues to
repeat the start-up cycle,
without lockout
Ignition with pulsations
Burner does not reach maxi-
mum output
Burner stops with air damper
open
Problem
38 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
39 - A limiter or safety control device is open. . . . . . . . . . . . . Adjust or replace
40 - Line fuse blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
41 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
42 - No gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open the manual valves between contactor and train
43 - Mains gas pressure insufficient . . . . . . . . . . . . . . . . . . . . Contact your GAS COMPANY
44 - Minimum gas pressure switch fails to close . . . . . . . . . . Adjust or replace
45 - Servomotor fails to move to min. ignition position. . . . . . Replace
46 - The gas pressure in the gas mains lies very close to the
value to which the minimum gas pressure switch has
been set. The sudden drop in pressure after valve open-
ing causes temporary opening of the pressure switch
itself, the valve immediately closes and the burner
comes to a halt. Pressure increases again, the pressure
switch closes again and the ignition cycle is repeated.
And so on
47 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust. See page 16
48 - Ignition electrode incorrectly adjusted. . . . . . . . . . . . . . . Adjust, see fig. (C) page 14
49 - Incorrectly adjusted fan air damper: too much air . . . . . . Adjust
50 - Output during ignition phase is too high . . . . . . . . . . . . . Reduce
51 - Remote control device TR fails to close . . . . . . . . . . . . . Adjust or replace
52 - Defective control box. . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
53 - Defective servomotor . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
54 - Defective servomotor . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
Possible cause
41
Recommended remedy
Reduce the minimum gas pressure switch interven-
tion pressure. Replace the gas filter cartridge.
20054056