Inverter ambient or internal temperature has exceeded upper operating limit (max 60°C). Inverter shuts down. Auto-resumes when temperature normalises. Displayed fault ID: 037.
Common causes
Ambient temperature exceeds 60°CInverter in poorly ventilated locationInverter exposed to direct sunlightCooling fan failed or obstructed
What to check
STEP 1
Check ambient temperature at installation — max operating temp is 60°C. Verify inverter has adequate clearance for ventilation. Fit shade if exposed to direct sunlight.
STEP 2
Check cooling fans are spinning freely — clean if obstructed by dust, debris, or cables. Fan not spinning under load may need replacement.
Escalate if
Ventilation, shading, and fan confirmed good but fault persists — contact Sungrow support
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