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We have 2 different circuits here. One operates the board and thermostats with zones. The other operates the furnace. We will need to know what the led lights in the furnace do when unit is in lockout.
Also you can bypass lockout by turning off/on at furnace for a reboot.
Is air flow ok?
Barometric bypass working?
Filter is not high efficiency restrictive?
If the das is coding you are running on limit....which is too little air flow for the amount of heat being generated
The issue is when only 1 or 2 zones are calling.
We have a furnace that is made to put out "X" btu's.
But then we zone it and say we only want to heat one zone....but the furnace still makes X btus.
If all zones are open we have a normally operating system. But when zones open and close it chokes the system down.....this is where a bypass comes in...it connects the return to the supply.....if one zone calls..the extra air/heat circulates back through the supply to return and creates a loop. This is fine for air flow...but we still have X btu's circling through.
If you can post a pic of the furnace and close duct I will see if/what type bypass yo have. If you didnt have one the furnace life is drastically reduced....
a high das...That is the number one thing we dont want to happen, whether you can live with it not. This means the furnace/heat pump is peaking to a safety shut down. Not a standard operation, but a safety.
I am speaking from an operational/safety mode and not convenience/inconvenience.
The el296 has a 2 speed (variable) motor...this does not mean it speeds up and down based on restriction or desired cfm. It has low speed for first stage heat and switches to high speed for second stage. You can choose these via dip switches..but it is not a true variable in that reacts constantly and adjusts...it simply targets the 2 different levels of cfm chosen.
I am going to opt out and see if someone can assist you more efficiently.
I wish you the best.
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