
Repost with picture. ~6 year old heater. What signs should i look for before it fully gives up. And any maintenance to improve longevity
Title. Repost because reddit acted up and didnt link picture to heater or its current condition.

Title. Repost because reddit acted up and didnt link picture to heater or its current condition.
Fixed our previous chem feeder problems. Heater is my next big concern. Luckily going into summer it wont be awful if it goes out, but trying to learn any signs of it giving up or learning any maintenance i can do on it to keep it going.
Any help/advice is appreciated! Ive learned a lot from responses in the past!
Peristallic pump and injectors pictured.
Our chlorine injector stops working pretty consistently. Costing $50 for a new one each time. Last one came in and didnt work immediately. Trying to understand why theyre not working and any ways to test theyre broken or something else is going on, as well as any maintenance i can do to keep it from breaking