Saunier Duval Themaclassic F30E SB Instructions For Use Installation And Servicing page 42

Is the temperature higher if you reduce
the flow through the taps?
Check that the cold water inlet restrictor
is fitted.
Check the rate of flow.
Check burner pressure is correct.
Is there is 230V ac
at fan during demand?
Faulty fan, replace.
• CHECK CONTINUITY OF IGNITION (ELECTRODES AND LEADS)
• CHECK POWER SUPPLY FROM PCB TO IGNITION UNIT
4000123924-2
18 Fault Finding
F30E/F35E ONLY
FAULT: THE WATER AT THE TAPS IS LUKE-WARM.
YES
FAULT: THE FAN DOES NOT START.
YES
FAULT: THE FAN RUNS BUT THERE ARE NO SPARKS.
CONNECTIONS TO THE AIR PRESSURE SWITCH
Pr
P2
P1
H L
Air flow switch take-off.
Check the 3-way valve is not passing
NO
into the radiators. (The radiators should
stay cold in Summer setting)
NO
Check continuity of fan harness.
Faulty PCB, replace.
3
2 1
Electrical contacts.
42
YES