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ZAPI Controllers · TH. PROTECTION
Th. Protection

What this code means

The controller detected a high temperature, and the performance of the motor is limited.

Applies to: ZAPI ACE0 / COMBIAC0 controller.

Possible causes / checks (from the source)

It is suggested to check the cause of the high temperature. Usually the controller is not correctly installed or the fan doesn’t work.

Need the part?

If diagnosis points to a failed sensor, solenoid, controller or harness part, send us the code (TH. PROTECTION), machine model and serial number — we quote genuine and OEM replacement parts for export.

Source: ZAPI COMBIAC0 & ACE0 User Manual (AF6ZP0AG) via Heli Canada document library (doc.heliforklift.ca). Single published source — confirm against the manual for your exact model before ordering parts. Compiled 2026-10-30. No manufacturer affiliation.