Fault Finding - IDEAL Logic HEAT 12 Installation And Servicing

66 FaULT FINDINg ChaRT MaIN MENU
In order to assist fault finding the boiler has a 7 segment display. The key to the display codes is as follows:
aLTERNaTINg 'L' and '1'
aLTERNaTINg 'L' and '2'
aLTERNaTINg 'L' and '5'
aLTERNaTINg 'L' and '6'
aLTERNaTINg 'F' and '2'
aLTERNaTINg 'F' and '3'
aLTERNaTINg 'F' and '4'
aLTERNaTINg 'F' and '5'
aLTERNaTINg 'F' and '6'
aLTERNaTINg 'F' and '7'
aLTERNaTINg 'F' and '9'
aLTERNaTINg 'F' and 'a'
aLTERNaTINg 'F' and 'd'
aLTERNaTINg 'F' and '0'
aLTERNaTINg 'c' and '2'
aLTERNaTINg 'c' and '0'
NO Ch
NO DhW
NO DIspLay
Note that production boiler PCBs are factory pre-set to operate for boiler range and output, but when ordering Primary PCB as a
spare, an additional Boiler Chip Card (BCC) MUST also be purchased for your specific boiler range and output.
**If PCB replaced as a spare ensure that the BCC (boiler chip card - small plastic part) is fitted to the PCB otherwise replace PCB.
REsTaRT pROCEDURE - To restart boiler, turn mode knob to restart position and immediately turn knob back to required setting.
52

Fault Finding

FLOW TEMpERaTURE OVERhEaT LOCKOUT
CONTaCT ELECTRICITy pROVIDER
BCC FaULT (BOILER ChIp CaRD)
gO TO FRaME 67 -
gO TO FRaME 68 -
IgNITION LOCKOUT
5 REsTaRTs WIThIN 15 MINs -
TURN pOWER OFF aND ON
gO TO FRaME 69 -
FaLsE FLaME LOCKOUT
gO TO FRaME 70 -
FLaME LOss
gO TO FRaME 71 -
FaN FaULT
gO TO FRaME 72 -
FLOW ThERMIsTOR FaULT
gO TO FRaME 73 -
RETURN ThERMIsTOR FaULT
gO TO FRaME 74 -
OUTsIDE sENsOR FaULT
LOW MaINs VOLTagE -
pCB FaULT -
**REpLaCE pCB
gO TO FRaME 75 -
FLOW/RETuRN REVERSED
gO TO FRaME 76 -
NO WaTER FLOW
BCC NOT FITTED
gO TO FRaME 77 -
REsTaRT BOILER
gO TO FRaME 78
gO TO FRaME 79
gO TO FRaME 80
Ideal Logic Heat -
Installation and Servicing