CTD 40 F13 Home › Forums › Trade Technical & Spare Parts Forums › Trade Technical Enquiries › CTD 40 F13 This topic has 1 reply, 2 voices, and was last updated 19 years, 2 months ago by Johnnyboy. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts February 8, 2007 at 10:45 am #24880 JohnnyboyParticipant Flashing lights 1,2 and 4 along with on off rapid flashing. Fault should be rear ntc F 13 but I have just replaced the complete heater assy. It works for 5-10 mins then the fault lights start. PCB???, is the front stat is normally o/c ??? February 8, 2007 at 10:59 am #203653 iadomModerator Re: CTD 40 F13 Front ntc N/C. Should give error F03 if front one is faulty. Jim. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In