Lately we have been experiencing the following:
- Inverter buzzing with hairdryer on when on AC, even on low setting; sometimes also intermittently when the fridge is running;
- While on AC the inverter briefly switches to DC for +-6s before switching back to AC. There is no AC failure as stove clock and prepaid meter remain on. It happened 3-4 times the past week.
What would cause the above? An inverter or incoming power issue?
Many thanks in advance.