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Vaillant VR_71: add keepValveOperable (4) to Mc{1,2,3}Operation status enum #621

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Vaillant VR_71: add keepValveOperable (4) to Mc{1,2,3}Operation status enum #621

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4afa0fe
Vaillant VR_71: add keepValveOperable (4) to Mc{1,2,3}Operation status
buliwyf42 Jun 24, 2026
a80c82c
Vaillant VR_71: add cooling (2) to Mc status enum
Aug 10, 2026
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33 changes: 30 additions & 3 deletions src/vaillant/26.vr_71.tsp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,9 @@ namespace Vr_71 {
@inherit(w_1)
@ext(0x2, 0)
model Mc1Operation {
status: onoff;
@values(Values_McStatus)
status: UCH;

flowtempdesired: temp1;

@in
Expand All @@ -80,7 +82,9 @@ namespace Vr_71 {
@inherit(w_1)
@ext(0x2, 1)
model Mc2Operation {
status: onoff;
@values(Values_McStatus)
status: UCH;

flowtempdesired: temp1;

@in
Expand All @@ -93,7 +97,9 @@ namespace Vr_71 {
@inherit(w_1)
@ext(0x2, 0x2)
model Mc3Operation {
status: onoff;
@values(Values_McStatus)
status: UCH;

flowtempdesired: temp1;

@in
Expand Down Expand Up @@ -137,6 +143,27 @@ namespace Vr_71 {
on: 20,
}

/**
* Mixer-circuit operation status. See issue #620.
*
* Value 4 is written by the controller in a short daily burst (~5 min) on
* otherwise-off circuits — a "keep valve operable" maintenance run
* (anti-seize).
*
* Value 2 occurs on cooling-capable systems while the circuit is cooling
* (reported for a VR 71 + VRC 700 driving aroVAIR convectors: flow target
* 10 °C at 2 versus 42.5-44 °C at 1). On those systems 1 therefore means
* "heating" rather than a generic "on"; the label is kept as `on` because
* this field used the shared `onoff` type before, and renaming it would
* change the reported state for every existing installation.
*/
enum Values_McStatus {
off: 0,
on: 1,
cooling: 2,
keepValveOperable: 4,
}

/** included parts */
union _includes {
Errors_inc,
Expand Down