Check for type==1 before we change demand control

src/models/DemandControl.ts

@@ -19,15 +19,17 @@ export class DemandControl {
     }
 
     public overwrite(obj: Partial<DemandControl>) {
+        if (obj.type !== undefined) this.type = obj.type;
         if (obj.enabled !== undefined) this.enabled = obj.enabled;
         if (obj.mode !== undefined) this.mode = obj.mode;
         if (obj.maxPower !== undefined) this.maxPower = obj.maxPower;
     }
 
     // According to https://www.akkudoktor.net/forum/postid/190147/
     public getRequestDict(): RequestDict {
-        const dict: RequestDict = {};
         if (this.enabled == undefined) throw new Error('Required Field enabled does not exist');
+
+        const dict: RequestDict = {};
         dict['lpw'] = ''; // Appeared in all examples but doesn't seem to be necessary
         dict['en_demand'] = this.enabled ? 1 : 0;
         if (!this.enabled) {
@@ -39,7 +41,8 @@ export class DemandControl {
         // Enable and set demand control
         // http://<DAIKIN-IP>/aircon/set_demand_control?lpw=&en_demand=1&mode=0&type=1&max_pow=[40-100]
 
-        // For automatic or manual demand control we need mode, type and maxPower
+        // For automatic or manual demand control we need type==1, mode and maxPower
+        if (this.type !== 1) throw new Error('Required Field type != 1. Assume no support for demand control');
         if (this.mode === undefined) throw new Error('Required Field mode do not exists');
         if (this.maxPower === undefined) throw new Error('Required Field maxPower do not exists');