Voltage Spikes Causing VRF Issues

[RichcoolTex]

Does anyone know what type of surge protection devices you have used for Mitsubishi Electric VRF? There is a variance of 5%, but also states any voltage above 5 Volts will cause error code 4250 which is a over current protection. After 3 times, the system shuts down. Just need some type of voltage surge suppressor to keep the voltage spikes from damaging the inverter board. Any help is appreciated.

[pecmsg]

Voltage “Should” be within 10% of rating. 5% won’t cause an issue.
ICM makes good products

[RichcoolTex]

Thanks, Pecmsg. My problem is that we are constantly having voltage spikes, and could end up ruining the Inverter Board on the VRF ODU. I will look up ICM. Thanks!!!