Code H0: Malfunction of sensor system of compressor
Issue Description & Safety Warning
The Daikin SM-TS3 HVAC Self-Diagnosis has triggered a critical Malfunction of sensor system of compressor alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Unit area: Outdoor Unit Product scope: RA, SkyAir, VRV, Package, Heat reclaim ventilator, Chiller, Fan Coil Chart object marker: kk Supposed causes: - Defective outdoor unit PCB - Harness is disconnected, or defective connection - Defective PCB
Source: Daikin SM-TS3 Simple Self-Diagnosis by Malfunction Code chart
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Daikin SM-TS3 HVAC Self-Diagnosis Alarms
Daikin controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code H0 on the SM-TS3 HVAC Self-Diagnosis identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Daikin's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 139 Daikin SM-TS3 HVAC Self-Diagnosis codes.
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