mypros+
Error code reference

Sanyo Air Conditioner Error Code H5

IPM module protection-IPM module over temperature, low voltage, or silica grease problem.

Sanyo codesSanyo air conditioner codes
Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the H5 error code actually means

Your Sanyo air conditioner has shut down because a critical internal power component got too hot, detected a voltage problem, or has a heat transfer issue that could cause damage if the unit keeps running. The system automatically stopped to protect itself. A simple restart may clear the fault, but if the error keeps coming back, a technician will need to inspect or replace the power module.

Diagnostic procedure

The full H5 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Cut off power, wait 10 minutes, re-energize; if fault persists after several attempts, replace the module.
Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock H5 procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of H5

Ranked by how often they cause this code
  1. 1IPM overheating due to dirty or blocked heatsink
  2. 2Degraded or improperly applied thermal grease
  3. 3Low supply voltage or DC bus undervoltage
  4. 4Failed or internally damaged IPM module
  5. 5Compressor mechanical overload

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about H5

What does H5 mean on a Sanyo air conditioner?
H5 indicates an IPM module protection fault. The IPM, or Intelligent Power Module, controls the compressor motor and has detected one of three unsafe conditions: excessive temperature inside the module, low DC bus voltage, or a thermal grease problem between the module and its heatsink. The unit shuts down automatically to prevent damage to the power electronics.
Will resetting the unit clear the H5 fault on my Sanyo air conditioner?
A reset can clear the fault if the triggering condition was a temporary thermal or voltage spike. Cut power completely, wait at least 10 minutes for the capacitors to discharge and the module to cool, then restore power. If the H5 code returns after several reset attempts, the underlying problem has not been resolved and a reset will not provide a lasting fix.
How much does it cost to repair an H5 error on a Sanyo air conditioner?
Repair cost depends on the root cause. If the fix is cleaning the heatsink or replacing thermal grease, costs are typically limited to a service call fee, generally in the range of $75 to $150. If the IPM module itself needs replacement, parts and labor together can range from $300 to $700 or more depending on the unit model and local labor rates.
Can I fix the H5 error myself, or do I need a technician?
A basic power reset is safe to attempt: shut off the unit, wait 10 minutes, and restore power. If the fault clears and stays clear, no further action may be needed. However, if the fault returns repeatedly, diagnosing the cause involves working with high-voltage DC bus components and replacing internal power modules, which is best handled by a qualified HVAC technician.
Is it safe to keep running my Sanyo air conditioner when it shows H5?
No. The H5 code is an active protection shutdown, meaning the unit has already stopped the compressor to prevent damage. Repeatedly forcing restarts without addressing the cause can accelerate damage to the IPM module or other connected components. Leave the unit off and diagnose the cause before returning it to service.

Related Sanyo air conditioner error codes

All Sanyo air conditioner codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass