Rheem error codes (page 2)

29 documented codes with ranked causes, repair costs, and step-by-step guidance.

Rheem heat pump code chart (15) Rheem furnace code chart (13)

Rheem Furnace — Loud bang on startup Rheem Furnace Loud Bang on Startup: Causes & Fixes Rheem furnace loud bang on startup usually means delayed ignition or expanding ductwork. Causes, fixes and costs from $0 DIY to $900. Rheem Furnace — Short cycling Rheem Furnace Short Cycling: Causes, Fixes & Costs Rheem furnace short cycling? Causes include dirty filters, overheating limits, oversizing and flame-sensor faults — fixes and costs from $0 to $1,800. Rheem Furnace — Won't turn on Rheem Furnace Won't Turn On: Causes, Fixes & Costs Rheem furnace won't turn on? Causes from tripped breakers to failed boards, safe checks you can do, plus honest US repair costs. Rheem Furnace — Won't ignite Rheem Furnace Won't Ignite: Causes, Fixes & Costs Rheem furnace won't ignite? Common causes include a failed hot surface igniter, dirty flame sensor, or ignition lockout — fixes cost $0–$1,200. Rheem Heat Pump — Flashing fault light Rheem Heat Pump Flashing Light: Causes & Fixes Rheem heat pump flashing fault light on the defrost board? What the blink codes mean, causes ranked by likelihood, safe checks, and repair costs.