On the display
The panel shows CONTROL PANEL - POWER FAILURE when a Control Power failure has occurred. Orange characters mean a Cycling shutdown; red characters mean a Safety shutdown.
What it means
A Control Power failure has occurred. Depending on the control center configuration, the message signals either a Cycling shutdown, with automatic restart after the power failure, or a Safety shutdown, with manual restart after the power failure.
Why it appears
- A Control Power failure has occurred.
- The shutdown is either a Cycling shutdown, which restarts automatically after a power failure, or a Safety shutdown, which restarts manually, according to the control center configuration.
Setpoints and thresholds
- Whether the restart after a power failure is automatic or manual is a control center configuration, set up by a qualified Service Technician following the YORK YMC2 Service Manual.
Reset and restart
If the power failure occurred while the chiller was running, it will automatically restart when power is restored.
In the Safety configuration, the restart after a power failure is manual instead of automatic.
Questions engineers ask
What does CONTROL PANEL - POWER FAILURE mean on a YORK YMC2?
It reports that a Control Power failure has occurred. Orange characters indicate a Cycling shutdown and red characters indicate a Safety shutdown.
Will a YORK YMC2 restart by itself after a power failure?
If the power failure occurred while the chiller was running, it automatically restarts when power is restored. Whether the restart is automatic or manual depends on the control center configuration.
How do I clear CONTROL PANEL - POWER FAILURE on a YORK YMC2?
The chiller automatically restarts when power is restored if it was running when the failure occurred. A manual restart after a power failure applies only when the control center is configured for the Safety shutdown.
Why is CONTROL PANEL - POWER FAILURE shown in red on a YORK YMC2?
Red characters mean the message is indicating a Safety shutdown, which is the manual-restart version after a power failure. Orange characters would indicate a Cycling shutdown with automatic restart.
Messages next to this one
Source
Written from the manufacturer's manuals for the YORK YMC2; every number and designation on this page is checked against them before publication. The row of the manual this message comes from:
All YORK YMC2 messages: fault codes · YORK YMC2 documentation · YORK manuals