Huawei 2062 Low Insulation | Faisalabad, Lahore

Huawei SUN2000 shows Low Insulation Resistance (2062)

Short answer

Alarm 2062 means the panels or cables have a weak insulation path to earth, either a short to ground or damp, poorly insulated cable. Huawei's steps are to check the PV-to-earth impedance and the PE cable. It often appears on damp mornings and clears as things dry; if it stays, there is damage to find.

What you will see

Inverter will not start after rain or fog
LED blinks red quickly (DC-side alarm)
2062 in FusionSolar

Why it happens

Water in connectors, cracked cables, rodent damage or a damaged panel lower insulation.

Diagram

Damp morning, weak insulation

Dry day

Panels and cablesWell insulated

→

InverterStarts

After rain or fog

Wet connector or cracked cableLeaks to earth

→

InverterWaits, 2062

If 2062 stays on dry days, there is damage to find.

Huawei SUN2000 inverters; read the alarm ID and cause ID in FusionSolar.

What you can check yourself

Note whether it only happens in wet weather
Look for cables lying in water or chewed from a safe spot

What not to do

Do not unplug connectors or open DC isolators
Do not ask for the protection threshold to be lowered to hide the fault

When to call us

Insulation test each string
Check PE connection
Repair damaged cable or connectors

Monsoon and fog

2062 rises across Punjab in the monsoon and on foggy Lahore and Faisalabad mornings. We test each string to find the fault.

Send us

alarm screenshots with times and weather