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Honeywell 7800 help

in Gas Heating
Alright, I'm stuck. (Full disclosure: I'm barely a mechanic, let alone an burner specialist. I just happened to read the manual for our oven and inherited this equipment when our maintenance man retired)
Here's the issue. We have a honeywell RM7800 relay hooked up to a gas burner that heats kiln ovens. We recently expanded the plant and moved the unit and ever since the move, the relay will randomly enter standby mode mid-cycle every now and then (it works fine 80% of the time, but seems to glitch a couple times a week). No error code, no alarm, just switches itself from run to standby and has to be reset to recycle. I had a contractor in and he couldn't figure it out. Hoping someone else out there has experienced this before or has some tips on what to check.
Here's the issue. We have a honeywell RM7800 relay hooked up to a gas burner that heats kiln ovens. We recently expanded the plant and moved the unit and ever since the move, the relay will randomly enter standby mode mid-cycle every now and then (it works fine 80% of the time, but seems to glitch a couple times a week). No error code, no alarm, just switches itself from run to standby and has to be reset to recycle. I had a contractor in and he couldn't figure it out. Hoping someone else out there has experienced this before or has some tips on what to check.
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Comments
Wiggle, shake and bump to find the bad connection somewhere.
I use a all plastic sharpie pen as a "probe". It is all insulated and you can push hot wires around fairly safely with it.
When it errored a yesterday, I was closest to the gas pressure switches and reset them second in the sequence after the relay reset(i normally reset them last, after resetting controllers), and the burner fired after this (without a controller reset). gas pressure on the gauges are in spec, so I'm wondering whether there could maybe be an issue with the pressure values that could cause an error such as this?
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If it stops mid cycle, it might be loss of flame during run or other reasons.
Gas pressure switches have their own resets. Resetting only controller will not restart system. So, if you reset control and system starts , then it is not gas pressure switches.
if you would have display module installed, it will give you error code and also it has error history.
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