Code 21 on a SubZero 632 refrigerator.
Anyone have any code info on this.
On the initial call I found the suction in a vacuum and the FF side was warm.
Recharged with 134a to 6 psi.
On a follow up call today I found a suction psi of 12,head at 100 psi.
FF temp was at 34 degrees.Code 21 and SERVICE is flashing on display.
Because of the rise in pressure from what I originally found and what I charged it to I am suspecting a restriction in the system that broke free.Still need to know what the code is and a service manual if anyone has it available.