Navien
Navien Wire Harness PCB 30021893A
Wire harness for the printed circuit board on Navien LCB 700 Combi boilers, in 21kW, 28kW and 36kW internal and external models.
At a glance
- Part type: wire harness for the printed circuit board (PCB)
- Appliance family: LCB 700 Combi
£86.17
£71.81 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Navien wire harness for the printed circuit board (PCB) connects the control board to the boiler's electrical components. It is manufactured by Navien for the LCB 700 Combi boiler family. The harness carries control and sensor signals between the PCB and the rest of the appliance.
Signs this part needs replacing
- Intermittent boiler operation or unexplained lockouts
- Error codes relating to PCB communication or sensor faults
- Loose, corroded or heat-damaged connectors on the harness
- Visible damage to the wiring, insulation or pins
- Boiler failing to respond to controls or ignition sequences
Before you order
- Confirm your boiler model and output match the fitment list above
- Check whether your appliance is the internal or external variant
- Inspect the existing harness connectors and routing before ordering
- Isolate the power supply before removing or fitting the harness
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 21KW (Serial Number 1705) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 28KW (Serial Number 1710) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 28KW (Serial Number 1710) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI EXTERNAL 36KW (Serial Number 1709) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 21KW (Serial Number 1704) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 28KW (Serial Number 1706) | — | — | — | |
| NAVIEN LCB 700 COMBI INTERNAL 28KW (Serial Number 1706) | — | — | — |
Showing 10 of 12 compatible appliances.
Documents & drawings
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