ACQUITY CM / CH Error: Column active preheater over-temp fuse h/w fault - WKB4114
SYMPTOMS
Error: Column active preheater over-temp switch h/w fault
Error: Column active preheater over-temp fuse h/w fault
Error: Column {x} active preheater sensor h/w fault
ENVIRONMENT
- ACQUITY UPLC
- ACQUITY UPLC I-Class
- ACQUITY UPLC H-Class
- ACQUITY UPLC M-Class
- ACQUITY PREMIER
- Column Manager
- CH-A
CAUSE
Faulty active preheater (APH)
FIX or WORKAROUND
Replace active preheater
ADDITIONAL INFORMATION
Verify that the new preheater is heating. If not, check the F4 fuse on the CH-A/CH-30A PCB or F3 and F7-F10 on the CM-A PCB
Use the correct APH for your model: What is the part number for the ACQUITY Active Preheater (APH)? - WKB7232
In certain cases the observed issue might be due to worn contact surfaces on the active preheater itself. Try to clean the contact surfaces before replacing the active preheater.
id4114, A-30HCM, A-30MCM, UPC2CMAUX, UPCHA, UPCHAIVD, UPCMA, UPCMAIVD, UPCMAUX, UPIBSM, UPIBSM+, UPISMFL, UPISMFL+, UPISMFTIVD, UPISMFTN, UPISMFTN+, UPMASM, UPMBSM, UPMSMFL, UPPCHA, UPPCMA, UPPCMAUX, UPQSM, UPQSM+, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO