HELLO,
I have a question about the upgrade of board control B1809927S to kit 21V51U-843.
The installation instruction of the kit says to set up the switches on the new board the same as the old one (SW3 and SW4).
Well, before copying the set up I tried to see what those position are setting. For the old board (B1809927S) the installation instruction is displaying
a totally different image of the switches than what is on the board. Also there is no SW2 on the old board B1809927S.
The new board (21V51U-843) has more switches (SW2, SW5, SW7). The instruction for SW3 and SW4 seem to be the only ones which are important on this upgrade.
But what I found on the old board doesn't make sense to me SW3 1ON 2ON 3OFF 4OFF SW4 1OFF 2OF 3ON 4OFF .
What it worries me is SW4 4OFF which in the new board/kit should be ON for HEAT FULL WAVE (SW 3ON and SW 4ON) .
My question is , Could somebody have the switches set up for board B1809927S ?
And probably a not so good question, could somebody point me to a site or a URL where I could find schematics for these boards ?
Thank you
I have a question about the upgrade of board control B1809927S to kit 21V51U-843.
The installation instruction of the kit says to set up the switches on the new board the same as the old one (SW3 and SW4).
Well, before copying the set up I tried to see what those position are setting. For the old board (B1809927S) the installation instruction is displaying
a totally different image of the switches than what is on the board. Also there is no SW2 on the old board B1809927S.
The new board (21V51U-843) has more switches (SW2, SW5, SW7). The instruction for SW3 and SW4 seem to be the only ones which are important on this upgrade.
But what I found on the old board doesn't make sense to me SW3 1ON 2ON 3OFF 4OFF SW4 1OFF 2OF 3ON 4OFF .
What it worries me is SW4 4OFF which in the new board/kit should be ON for HEAT FULL WAVE (SW 3ON and SW 4ON) .
My question is , Could somebody have the switches set up for board B1809927S ?
And probably a not so good question, could somebody point me to a site or a URL where I could find schematics for these boards ?
Thank you
source https://hvac-talk.com/vbb/showthread.php?2223419-GOODMAN-GCV90905DXA-B1809927S-TO-UPGRADE-21V51U-843&goto=newpost
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