{"action":"created","issue":{"url":"https://api.github.com/repos/NREL/EnergyPlus/issues/4695","labels_url":"https://api.github.com/repos/NREL/EnergyPlus/issues/4695/labels{/name}","comments_url":"https://api.github.com/repos/NREL/EnergyPlus/issues/4695/comments","events_url":"https://api.github.com/repos/NREL/EnergyPlus/issues/4695/events","html_url":"https://github.com/NREL/EnergyPlus/issues/4695","id":55338250,"number":4695,"title":"WaterHeater:HeatPump misleading error message about priority","user":{"login":"mjwitte","id":4991075,"avatar_url":"https://avatars.githubusercontent.com/u/4991075?v=3","gravatar_id":"","url":"https://api.github.com/users/mjwitte","html_url":"https://github.com/mjwitte","followers_url":"https://api.github.com/users/mjwitte/followers","following_url":"https://api.github.com/users/mjwitte/following{/other_user}","gists_url":"https://api.github.com/users/mjwitte/gists{/gist_id}","starred_url":"https://api.github.com/users/mjwitte/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mjwitte/subscriptions","organizations_url":"https://api.github.com/users/mjwitte/orgs","repos_url":"https://api.github.com/users/mjwitte/repos","events_url":"https://api.github.com/users/mjwitte/events{/privacy}","received_events_url":"https://api.github.com/users/mjwitte/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/NREL/EnergyPlus/labels/EnergyPlus","name":"EnergyPlus","color":"c7def8"},{"url":"https://api.github.com/repos/NREL/EnergyPlus/labels/Priority","name":"Priority","color":"e11d21"},{"url":"https://api.github.com/repos/NREL/EnergyPlus/labels/S2%20-%20Medium","name":"S2 - Medium","color":"fbca04"}],"state":"open","locked":false,"assignee":{"login":"nmerket","id":5325034,"avatar_url":"https://avatars.githubusercontent.com/u/5325034?v=3","gravatar_id":"","url":"https://api.github.com/users/nmerket","html_url":"https://github.com/nmerket","followers_url":"https://api.github.com/users/nmerket/followers","following_url":"https://api.github.com/users/nmerket/following{/other_user}","gists_url":"https://api.github.com/users/nmerket/gists{/gist_id}","starred_url":"https://api.github.com/users/nmerket/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nmerket/subscriptions","organizations_url":"https://api.github.com/users/nmerket/orgs","repos_url":"https://api.github.com/users/nmerket/repos","events_url":"https://api.github.com/users/nmerket/events{/privacy}","received_events_url":"https://api.github.com/users/nmerket/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/NREL/EnergyPlus/milestones/1","html_url":"https://github.com/NREL/EnergyPlus/milestones/EnergyPlus%208.4.0","labels_url":"https://api.github.com/repos/NREL/EnergyPlus/milestones/1/labels","id":1229491,"number":1,"title":"EnergyPlus 8.4.0","description":"Public release of EnergyPlus 8.4.0","creator":{"login":"Myoldmopar","id":849824,"avatar_url":"https://avatars.githubusercontent.com/u/849824?v=3","gravatar_id":"","url":"https://api.github.com/users/Myoldmopar","html_url":"https://github.com/Myoldmopar","followers_url":"https://api.github.com/users/Myoldmopar/followers","following_url":"https://api.github.com/users/Myoldmopar/following{/other_user}","gists_url":"https://api.github.com/users/Myoldmopar/gists{/gist_id}","starred_url":"https://api.github.com/users/Myoldmopar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Myoldmopar/subscriptions","organizations_url":"https://api.github.com/users/Myoldmopar/orgs","repos_url":"https://api.github.com/users/Myoldmopar/repos","events_url":"https://api.github.com/users/Myoldmopar/events{/privacy}","received_events_url":"https://api.github.com/users/Myoldmopar/received_events","type":"User","site_admin":false},"open_issues":131,"closed_issues":26,"state":"open","created_at":"2015-07-28T14:11:03Z","updated_at":"2015-08-18T17:26:12Z","due_on":"2015-09-30T06:00:00Z","closed_at":null},"comments":2,"created_at":"2015-01-23T21:56:02Z","updated_at":"2015-08-19T14:32:11Z","closed_at":null,"body":"Helpdesk ticket 10206\r\nFrom user post . . .\r\n```\r\n** Severe ** WaterHeater:HeatPump = BLOCK1:ZONE1 HP WATER HEATER:\r\n** ~~~ ** Heat pump water heaters must have lower priorities than all other equipment types in a ZoneHVAC:EquipmentList.\r\n** Fatal ** Errors found in getting WaterHeater:HeatPump input. Preceding condition causes termination.\r\n...Summary of Errors that led to program termination:\r\n..... Reference severe error count=1\r\n..... Last severe error=WaterHeater:HeatPump = BLOCK1:ZONE1 HP WATER HEATER:\r\n```\r\nActually, I did put WaterHeater:HeatPump (BLOCK1:ZONE1 HP WATER HEATER) at the lowest priority than all other equipment types in ZoneHVAC:EquipmentList (please refer to below extract of idf file).\r\n```\r\nZoneHVAC:EquipmentList,\r\nBlock1:Zone1 Equipment, !- Name\r\nZoneHVAC:Baseboard:RadiantConvective:Electric, !- Zone Equipment 1 Object Type\r\nBlock1:Zone1 Electric Radiator, !- Zone Equipment 1 Name\r\n1, !- Zone Equipment 1 Cooling Sequence\r\n1, !- Zone Equipment 1 Heating or No-Load Sequence\r\nWaterHeater:HeatPump, !- Zone Equipment 2 Object Type\r\nBlock1:Zone1 HP Water Heater, !- Zone Equipment 2 Name\r\n3, !- Zone Equipment 2 Cooling Sequence\r\n3, !- Zone Equipment 2 Heating or No-Load Sequence\r\nZoneHVAC:AirDistributionUnit, !- Zone Equipment 3 Object Type\r\nBlock1:Zone1 Single Duct CAV Reheat ADU, !- Zone Equipment 3 Name\r\n2, !- Zone Equipment 3 Cooling Sequence\r\n2; !- Zone Equipment 3 Heating or No-Load Sequence\r\n```\r\n----------------------------------\r\nThe error message can be worded more clearly to specify that the heat pump water heater should have heating and cooling sequence number 1.  Also, it seems this could be a sever but not fatal.\r\nNo test file from the user, should be able to create one easy enough"},"comment":{"url":"https://api.github.com/repos/NREL/EnergyPlus/issues/comments/132620347","html_url":"https://github.com/NREL/EnergyPlus/issues/4695#issuecomment-132620347","issue_url":"https://api.github.com/repos/NREL/EnergyPlus/issues/4695","id":132620347,"user":{"login":"nmerket","id":5325034,"avatar_url":"https://avatars.githubusercontent.com/u/5325034?v=3","gravatar_id":"","url":"https://api.github.com/users/nmerket","html_url":"https://github.com/nmerket","followers_url":"https://api.github.com/users/nmerket/followers","following_url":"https://api.github.com/users/nmerket/following{/other_user}","gists_url":"https://api.github.com/users/nmerket/gists{/gist_id}","starred_url":"https://api.github.com/users/nmerket/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nmerket/subscriptions","organizations_url":"https://api.github.com/users/nmerket/orgs","repos_url":"https://api.github.com/users/nmerket/repos","events_url":"https://api.github.com/users/nmerket/events{/privacy}","received_events_url":"https://api.github.com/users/nmerket/received_events","type":"User","site_admin":false},"created_at":"2015-08-19T14:32:11Z","updated_at":"2015-08-19T14:32:11Z","body":"Okay, just re-read that along with the I/O Reference. It's confusing in the code as well. So, it looks like the HPWH needs to have the lowest *sequence number* which is actually the highest *priority*. I think that's what @mjwitte was getting at. "}}