De'Longhi Portable Air Conditioner PF — What It Means & How to Fix It
PF on a De'Longhi Pinguino means "Probe Failure": a probe is damaged, and De'Longhi says to contact customer service.
What this code means
The Pinguino Extreme FAQ lists PF as "Probe Failure" (probe damaged). The probes are the sensors that tell the control what temperature the unit is working at. De'Longhi gives no owner fix — the instruction is simply to contact its customer service number.
From De'Longhi's FAQ for the Pinguino Extreme. On other appliances PF often means power failure, so do not assume that meaning here — confirm against your model's manual.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Damaged temperature probe | Common | No — authorised service |
| Probe wiring fault | Occasional | No — authorised service |
What you can try yourself
- Switch the unit off and unplug it.
- Note the model number from the rating label.
- Contact De'Longhi customer service and quote the PF message.
When to call a technician
- PF is displayed — De'Longhi directs owners to customer service for this message.
- The unit will not cool or shuts down shortly after starting.
Typical professional repair cost: A probe replacement through a De'Longhi authorised service centre; ask for a quote, and check your warranty first.
Frequently asked questions
Does PF mean power failure on a De'Longhi Pinguino?
No. De'Longhi defines PF on the Pinguino Extreme as Probe Failure, meaning a probe is damaged.
Can I reset a PF error?
De'Longhi's FAQ gives no reset. It says to contact customer service if the message is displayed.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related De'Longhi codes
- De'Longhi Portable Air Conditioner HL HL (or Ft) on a De'Longhi portable air conditioner means the unit is full of water and has to be drained.
- De'Longhi Portable Air Conditioner Lt Lt on a De'Longhi Pinguino means "Low Temperature" — the frost protection has paused the unit, and it restarts by itself after defrosting.
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