Weil-McLain 550-110-260/0107 manual 11d Troubleshooting control module lights

Page 47

GOLD CGs Gas-Fired Water Boiler — Boiler Manual

11d Troubleshooting — control module lights

CHART 1 — Troubleshooting POWER light status

— Usually indicates reversed 120 VAC polarity if POWER light flashes by itself —

Electrical shock hazard — Wherever you see ▲TURN OFF POWER▲, follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.

Is POWER light off?

	No					Yes


		Is POWER light...

	Flashing		Flashing with				On steady
	alone		another light				(not flashing)



	TSTAT CIRC			Chart 2
	light flashing			Chart 2
	light flashing

	PRESS SWITCH			Chart 3			Chart 5
	light flashing			Chart 3			Chart 5
	light flashing

	FLAME			Chart 4			Chart 6
	light flashing			Chart 4			Chart 6
	light flashing

For insufficient heat or no heat problem, go to Chart 7 if POWER light is on steady, with no other light flashing.

•Usually indicates polarity on incoming 120 VAC power line is wrong.

•▲TURN OFF POWER▲ at service switch or breaker, then reverse the HOT and NEUTRAL wires entering the boiler in the J-box.

•Restore POWER at service switch or breaker.

Is POWER light flashing now?

No			Yes


			Have system checked by a
			licensed electrician.
			If problem persists, call your
			If problem persists, call your
Boiler should now			local Weil-McLain sales
operate normally.			representative.

•Make sure service switch or circuit breaker is on or fuses are good.

•Remove 120 VAC IN plug (Figure 25, item 3, page 46) on control module.

•Using voltmeter, check across top and bottom pins of 120 VAC IN plug.

Does voltmeter indicate 120 VAC?

No	Yes

Problem is with incoming electricity. Have licensed electrician repair circuit.

•Reconnect 120 VAC IN plug.

•Remove 120 VAC transformer PRIMARY plug (Figure 25, item 2, page 46) on control module.

•Using voltmeter, check across top and bottom pins of PRIMARY receptacle.

Does voltmeter indicate 120 VAC?

No	Yes

Replace control module.

Retest.

•Reinstall 120 VAC transformer PRIMARY plug.

•Remove 24 VAC transformer plug (Figure 25, item 5, page 46) on control module.

•Using voltmeter, check across pins of receptacle.

Does voltmeter indicate 24 VAC?

No	Yes

Replace transformer.		Replace control module.
Retest.		Retest.

Part number 550-110-260/0107

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Image 47

Contents Gold CGs How it works Gold CGs Gas-Fired Induced-Draft Water Boiler Contents User InstallerPlease read before proceeding Before locating the boiler, check the following 1a Prepare boiler location codes & checklistInstallations must follow these codes 1b Prepare boiler location clearances Vent system When removing boiler from an existing common vent system1c Prepare boiler location vent system CGs special vent systemProducts to avoid 1d Prepare boiler location contaminationSizing air openings 1e Prepare boiler location air openingsCombustion air options Special considerationsSizing air openings for CGs installations Inspect orifices and burners 2a Prepare boiler placement & setupOrifice replacement procedure Place boiler/crate near positionPrepare boiler for test 2b Prepare boiler pressure testHydrostatic pressure test Drain and remove fittings3a Water piping general information 3b Water piping single-zone system Systems 3c Water piping multiple zonesPiping multiple zones Piping for radiant heating Systems or converted gravityReturn water 130F or higher Primary/secondary preferred bypass piping method Temperature gaugesValve adjustment Figures 8 and 9 only 3d Piping low temp systemsPrimary/secondary piping BOILER-bypass piping method Valve adjustmentFigures 8 SYSTEM-bypass piping method Prevent chilled water from entering 3e Water piping refrigeration systemsVenting and combustion air Propane Gas Connecting gas supply piping to boilerGas piping Natural GasThermostat Field wiringElectrical installation must comply with Wiring connectionsVerify water chemistry Freeze protection when used7a Start-up preparation Check for gas leaksStart the boiler 7b Start-up operate boilerInspect system water piping Inspect base insulation Final check before starting boilerPilot burner flame Figure 7c Start-up if boiler doesn’t startCheck burner flames Check forInstallation and service certificate Check-out procedure checklist9a Operation sequence Schematic wiring diagram 9b Operation wiring diagramsLadder wiring diagram 9c Operating instructions CGs-3 to CGs-6 9c Operating instructions CGs-3 to CGs-6 9c Operating instructions CGs-3 to CGi-6 Verify Proper Operation After Servicing 10a Service and maintenance schedule10b Service & maintenance annual start-up Oiled-bearing circulators Burners, base and inlet air boxCondensate drain system Inducer motor10b Service & maint. annual start-up Relief valve, typical Boiler relief valveReview with owner Cleaning boiler heating surfacesCheck the following 11a Troubleshooting procedureBefore troubleshooting Troubleshooting air pressure reading 11b Troubleshooting air pressure switchAir pressure switch Check pressure switch settingTroubleshooting the control module 11c Troubleshooting control moduleControl indicator lights Lockout modes Control indicator lights NON-LOCKOUT modesControl module connections Chart 1 Troubleshooting Power light status 11d Troubleshooting control module lightsChart 2 Tstat Circ & Power lights flashing Chart 3 Press Switch & Power lights flashing Chart 4 Flame & Power lights flashing Item 8 , Does blower motor operate? Verify Sequence of operation, , Section assembly Base Jacket Trim Controls 12a Replacement partsSection assembly 12b Replacement parts section assemblyBase assembly 12c Replacement parts baseDescription Weil-McLain Part number Jacket assembly 12d Replacement parts jacketBoiler Model Weil-McLain part number Part number 12e Replacement parts trimPropane gas components 12f Replacement parts controlsDimensional drawing 13a DimensionsDOE 13b RatingsRemoval of Combustion Chamber Lining or Base Panels Handling ceramic fiber and fiberglass materials