29.04.24 - RFC Revert Fan mode to be removed
📋 Summary
Gatwick HVAC - ChangesAn AC stack/condenser was changed on Friday. After this change, the fan mode, which had been previously removed, is now present again in few rooms checked London Gatwick. In response, a request for change (RFC) has been created to revert the system back to the previous mode of operation where the fan mode is removed. Fan mode - DescriptionThe fan mode feature in the bloc app is designed to provide guests with feedback when they adjust their air conditioning settings. It functions by triggering the Samsung DMS (or an other a/c device management system) to briefly output air after any changes have been made to the HVAC settings. This serves as a confirmation for guests that their A/C adjustments have been successfully implemented. However, this feature may also slow down the process of reaching the desired temperature and can potentially contribute to over-cooling or overheating the room by circulating air unnecessarily.
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📝 Change Details
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Change Request |
Remove Fan Mode |
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Status |
TBC |
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Recommended start date |
29/04/2024 |
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Related issues |
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Driver |
Fan mode toggled back on. |
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Impacted services |
A/C app control |
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Current blockers |
Peer Review of Configuration change |
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Service owner review |
Olivier |
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Technical review |
Alex Lloyd |
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Reporter |
Olivier |
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Change Approvers |
Wai / Khin |
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Informed stakeholders |
Olivier |
🗓️ Change Plans
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Plan Type |
Description |
Impact |
Risk |
Schedule |
|---|---|---|---|---|
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BACKUP PLAN |
Take back up of current configuration. |
No Impact |
Risk None |
Ahead of roll out |
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BACKUP PLAN |
Have peer review of updated configured undertaken to ensure we have not impacted any other services - If this fails peer review roll out is delayed. |
No Impact |
Risk None |
Ahead of roll out |
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ROLLBACK PLAN |
Rollback to an earlier configuration |
No Impact |
Risk None |
On the date for config change |
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CHANGE PLAN |
Update the Xtreme room configs with Fan speed object removed. |
Low Impact |
Risk None |
Roll out on 29/04/2024 |
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TEST PLAN |
Roll out to Master Processors and confirm master processors have updated. And test on a single room to ensure the fix is correct. |
No Impact |
Low Risk |
Day of roll out |
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TEST PLAN |
Reboot ten processors giving intervals of 5 minuets each. Checking the successful removal of the A/C fan mode. |
Low Impact |
Low Risk |
Day of roll out |
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TEST PLAN |
Continue updating processors in batches of ten allowing five minuets breaks for power consumption to stabilise. |
Low Impact |
Low Risk |
Day of roll out |
🗨️ Communications
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Team |
Who |
What |
When |
|---|---|---|---|
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Xtreme to confirm ready for upgrades. |
Alex / Paul |
Confirm to Khin or Wai that the amended Config is ready to be rolled out to a single room for testing |
29/04/2024 11:00 - 13:00 |
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Start of upgrade |
Alex Lloyd |
Roll out code to 10 Processors to allow for the panels to be ready to accept the new updates |
29/04/2024 |
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Completion of update |
Alex Lloyd |
Scan all processors and remotely test rooms across all floors, confirm with Khin and Wai that changes have been taken and that rooms are operational. |
29/04/2024 |
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Failure of update |
Olivier / Wai |
Send tests to processors and remotely test rooms |
29/04/2024 14:00 - 15:00 |
✅ Post-Implementation Review
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Date |
29/04/2024 |
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Requested for Comments |
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Service Owner |
Olivier |
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Participants |
Alex Lloyd |
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Review criteria |
Check All Rooms Mentioned in this RFC for the removal of the A/C offset. |
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Lessons Learned |
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Follow-up actions |
Run a follow up inspection carried out by staff across the hotel ensuring the A/C fan mode has been removed. |
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