Pioneer mini split error code PC 49
Compressor over-current (phase current) protection. Also shown as PC49.
- TypeProtection
- SystemCompressor / inverter
- Can I fix it?Technician job
- Applies toindoor unit display (four-character codes)
What PC 49 means on a Pioneer
Current in the compressor windings exceeded the limit and the drive shut down.
On this platform, PC 49 is a protection: the system stopped or throttled itself to prevent damage; many clear on their own once conditions return to normal.
Common causes
- A blocked outdoor coil or failed fan raising head pressure.
- Low supply voltage.
- A failing compressor.
- An overcharge of refrigerant.
How to fix it yourself
Do the reset and the visual checks, but the underlying repair needs a technician with a meter and the service manual.
- Look at the outdoor unit: clear leaves, cottonwood fluff, snow or ice from the coil and make sure the fan can spin freely and nothing is stacked against the cabinet.
- If you own a multimeter and are comfortable using it, measure the supply voltage at the outdoor unit's L1 and L2 terminals with the unit running. A 230 V system should read roughly 208 to 253 VAC.
- Reset the system: switch the breaker (or the outdoor disconnect) off, wait a full five minutes so the boards fully discharge, then switch it back on and restart from the remote.
Switch off power at the breaker before opening either unit. Capacitors in the outdoor unit hold a charge for several minutes after power is cut.
When to call a technician
If the coil is clean and voltage is normal, a technician should check compressor current and the charge.
Which Pioneer units show PC 49
This page applies to Pioneer WYS, WYT, Diamante, Inverter+ and Multi-zone (WYD/WYE) units on the indoor unit display (four-character codes). Pioneer's own documentation lists PC 49 as "Compressor over-current (phase current) protection", the same definition used across the Midea platform (four-character codes) it is built on. If your unit shows a code with a different shape (for example a four-character code, or a plain number), it is from a different table; use the lookup with your exact code.
Where Pioneer shows this code
indoor unit display (four-character codes): The display shows a two-letter prefix and a two-character suffix, either together (EH60) or alternating (EH, then 60). Write both parts down; the suffix is what identifies the fault. EH and EL are indoor-side faults, EC is an outdoor-side fault, and PC is an outdoor protection: the unit stopped itself to prevent damage.
Other Pioneer codes
Same part of the system as PC 49:
PC 49 on other brands
The same characters do not always mean the same thing. Check the brand on your unit.
- MRCOOL PC 49 Compressor over-current (phase current) protection
Questions people ask
Can I reset a Pioneer PC 49 code myself?
Yes. Turn the system off at the breaker for five minutes, then restart it. If PC 49 comes back, the fault is real and needs the checks above.
Is it safe to keep running a Pioneer showing PC 49?
Not repeatedly. A protection code means the unit stopped itself to prevent damage, and resetting it over and over can turn a cheap repair into a compressor failure. Reset once, check the basics, and stop if it returns.
What will a technician check for PC 49?
If the coil is clean and voltage is normal, a technician should check compressor current and the charge. Ask for the measurements, not just a parts quote.
Sources
- Pioneer WYS/WYT series installation and owner's manuals (error code table)
- Midea residential split service manual
Updated September 2026. Codes and definitions vary by model year. If your manual disagrees with this page, your manual wins. Send a correction.