Khalim Conn-Kowlessar 6b04514645 fix(mapper): resolve gas-boiler main fuel from §14.2 mains-gas meter ... A Summary §14.0 Table 4b gas boiler (SAP code 101-119) lodges no §14.0 "Fuel Type" string in the newer Elmhurst export. The carrier was resolved only from §15.0 "Water Heating Fuel Type" — fine when the same boiler heats the water, but a gas boiler paired with a SEPARATE electric immersion lodges §15.0 "Electricity", so `_elmhurst_gas_boiler_main_fuel` returned None and the cascade strict-raised MissingMainFuelType. Cert 001431 boiler-1/boiler-2 "before" variants are exactly this config: §14.0 SAP code 102/104 (mains-gas boiler), §15.0 electric immersion (code 909), §14.2 Meters "Main gas: Yes". The meter flag is the authoritative carrier signal — a 101-119 boiler on mains gas burns mains gas — so adopt it (SAP10 main_fuel 26 per _ELMHURST_MAIN_FUEL_TO_SAP10 "Mains gas") when §15.0 can't disambiguate. §15.0 gas/LPG still wins when present (keeps LPG-vs-mains-gas precision); no mains-gas meter + non-gas §15.0 still strict-raises rather than guessing. Spec: SAP 10.2 Table 4b "Seasonal efficiency for gas and liquid fuel boilers" (PDF p.168), rows 101-119. Both certs now resolve main_fuel=26 and compute (was: hard raise). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>		2026-06-06 17:48:04 +00:00
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domain	fix(mapper): resolve gas-boiler main fuel from §14.2 mains-gas meter	2026-06-06 17:48:04 +00:00
loaders	demo generated for use in address2uprn	2026-05-08 14:48:15 +00:00
schema	fix(mapper): read sloping_ceiling_insulation_thickness for roof code 8	2026-06-06 17:37:17 +00:00
search	bolstering testing	2026-04-28 13:46:09 +00:00
surveys	S0380.234: PV diverter (Appendix G4) — diverts surplus PV to the cylinder	2026-06-04 22:59:12 +00:00
__init__.py	testing out rebaselining	2026-02-12 22:25:03 +00:00
construction_age_band.py	testing out rebaselining	2026-02-12 22:25:03 +00:00
efficiency.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
floor.py	preparing partiy class	2026-02-05 08:54:27 +00:00
fuel.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
heating_controls.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
hotwater.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
main_heating.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
property_type_built_form.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
roof.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
walls.py	beginning to assembly the parity class	2026-02-04 18:34:59 +00:00
windows.py	testing out rebaselining	2026-02-12 22:25:03 +00:00