The spark generator PCB in our hob is an APCO 16440 from 1998 and has an isolation transformer between it and the mains and an earth connection, plus the four EHT leads to the burner electrodes and four wires to the corresponding knob microswitches with the common back to the transformer secondary.
The replacement generator module is enclosed in white plastic with blade terminals and came with no connection instructions and looks similar to many on the internet spares pages. Whilst the direct mains input is marked L and N (so presumably does not require the isolation transformer) and the microswitches are presumably SW(common), 1, 2, 3 and 4; the EHT output is puzzling as there are just four blade terminals. No where on the module is there an earth connection? How is the return path for the spark provided, even though the current might be microamps?
Any advice/clarification would be appreciated.
Rod
The replacement generator module is enclosed in white plastic with blade terminals and came with no connection instructions and looks similar to many on the internet spares pages. Whilst the direct mains input is marked L and N (so presumably does not require the isolation transformer) and the microswitches are presumably SW(common), 1, 2, 3 and 4; the EHT output is puzzling as there are just four blade terminals. No where on the module is there an earth connection? How is the return path for the spark provided, even though the current might be microamps?
Any advice/clarification would be appreciated.
Rod
