Paul-I need your help on my 5 year old PPP. Recently, the PPP has started clicking loudly for a couple minutes and then stops. Here’s some details:
-I understand the clicking is the internal relay and may be caused because it is switching between regeneration mode and protection mode.
-The relay clicks on and off (twice) about every 5 seconds and continues this for a couple minutes and then stops.
- when i watch the output voltage display while clicking occurs, I see the voltage drop from 120 down to 113/114 and the vary between that and 119 during the 5 seconds the relay is switching on/off.
-while this is happening the CUT and BOOST blue lights alternate on and off every 5 seconds (never seen these lights before)
-While this is happening, if I put my ear close to the top cover, I hear a distinct “sizzling” sound (like frying oil…) inside the PPP. This stops after the clicking episode ends. there is also a faint “burning” smell.
- Reading the THDistortion shows 4.5% IN and 0.5% OUT
-The PPP still seems to be functioning during this time as the connected components are still powered up.
-This occurs randomly a couple times a day with modest power requirements e.g. just a TV and DVR powered on.
I live in the Vancouver, BC, Canada area and we generally have good power. I don’t think we get low voltages that might cause problems.
Help please. If there seems to be a serious problem, is there a service center nearby? (It’s out of warranty)