Gas Valve Igniter Issue

[OneHoppyGuy]

Okay, Here is the project:
BCS 460
24VAC Honeywell Gas valves w/intermittent spark igniters
SSR 4 relay 5V module

Note: this system was working and the same wiring has worked for other brew stands we have built (BrewSteel.com)
All grounds are tied together
24VAC Transformer runs power to panel mounted switch
From switch power goes to N.O. relay contact
Common relay contact connected to gas valve ignition module

Using Output 0 (tried 0 - 3) manually
- Nothing attached to the BCS - BCS stays connected Output 0 remains on
- BCS attached to relay - BCS stays connected Output 0 remains on
- BCS attached to relay, Gas Valve igniter NOT grounded - igniter fires, BCS stays connected Output 0 remains on
- Direct jumper between relay contacts, igniter grounded - igniter fires
- BCS attached to relay, Gas Valve igniter grounded - igniter fires for a split second, BCS disconnects

I have tried 3 different relay modules

I am am stumped. Please help if you can.

[ECC]

Spark igniters can be a little tricky. The sparks can genererate enough EMI to mess with the BCS (sparks by definition are EMI, that's actually how engineers test for EMI resistance).

The best remedy is to try to isolate the BCS from the spark, either by putting some distance between it, or metal barrier and/or shielded wiring.

[ksl177]

Sounds familiar.

1. Isolate the grounds. Do your best to ensure the BCS ground is the least desirable return path for the high spark.

2. What he said.

[OneHoppyGuy]

Thank you for the suggestions

BCS is in a separate enclosure,i isolated all the grounds and placed all related wiring as far as possible from the igniter modules. Then did more testing. I think I have narrowed it down the the type of relay I'm using, the only thing left is a possible small voltage feeding back through the psuedo contacts. I ordered some puck style relays and will know soon...
It was also suggested that I put a slow blow fuse on the ground of the BCS.

[OneHoppyGuy]

Fixed!! Replaced the relay module with puck style SSRs and we have contact!!

[eduardo.manetta]

Fixed!! Replaced the relay module with puck style SSRs and we have contact!!

I'm having a similar issue. Sorry for the dumb question (maybe a language barrier, as english is not my first language), but could you, please, clarify what a "puck style SSR" is? In case you bought it online, could you point it out?

Many tks,
Eduardo

[JonW]

He was referring to an SSR like this: