Weil-McLain GOLD DV WATER BOILER, 550-141-850/0599 manual XIg Troubleshooting GCM lights

Page 74

GOLD GV Water boiler series 3 — manual

XIg Troubleshooting — GCM lights

CHART 1 — Troubleshooting POWER light status

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?

• Make sure service switch or circuit breaker is on or fuses

are good.

No

Yes

• Remove 120 VAC IN plug (Figure 34, Item 1) on control

module.

• Using voltmeter, check across top and bottom pins of

Is POWER light...

120 VAC IN receptacle.

Does voltmeter indicate 120 VAC?

Flashing

Flashing with

On steady

alone

another light

(not flashing)

No

Yes

TSTAT CIRC

Chart 2

Chart 6

Problem is with incoming

light flashing

electricity. Have licensed

LIMIT

Chart 3

Chart 7

electrician repair circuit.

light flashing

PRES SWITCH

Chart 4

• Reconnect 120 VAC IN plug.

light flashing

• Remove 120 VAC transformer PRIMARY plug (Figure

FLAME

Chart 5

34, Item 2) on control module.

light flashing

• Using voltmeter, check across top and bottom pins of

PRIMARY receptacle.

For insufficient heat or no heat problem, go to

Does voltmeter indicate 120 VAC?

Chart 8 if POWER light is on steady, with no other

light flashing.

No

Yes

• Usually indicates polarity on incoming 120 VAC power

Replace control module.

line is wrong.

Retest.

• ▲ TURN OFF POWER▲ at service switch or breaker,

then reverse the HOT and NEUTRAL wires entering the

boiler in the J-box.

• Reinstall 120 VAC transformer PRIMARY plug.

• Restore POWER at service switch or breaker.

• Remove 24 VAC transformer plug (Figure 34, Item 7) on

Is POWER light flashing now?

control module.

• Using voltmeter, check across pins of receptacle.

No

Yes

Does voltmeter indicate 24 VAC?

No

Yes

Have system checked by a

licensed electrician.

If problem persists, call your

Boiler should now

local Weil-McLain sales

Replace transformer.

Replace control module.

operate normally.

representative.

Retest.

Retest.

74

Part number 550-141-850/0699

Image 74

Contents Gold GV How it works Gold GV Water boiler Series Hazard definitions Installer User Please read before proceedingBoiler water When servicing boilerBoiler operation Contents Contents Ia Prepare boiler location overview Overview of this sectionInstallations must follow these codes Ib Prepare boiler location codes & altitudeLarge space Ic Prepare boiler location clearancesClearance options Small spaceFlooring and foundation Residential garage installationPrecautions FlooringGV special vent system Id Prepare boiler location vent systemRemoving from existing vent Ie Prepare boiler location contamination Air contaminationIf Prepare boiler location air openings Special considerations GV in small space less than aloneIIa Prepare boiler overview IIb Prepare boiler vent starter tee & drainScrew hole Base rail Insert Cpvc elbow Natural gas Plate installationIIc Prepare boiler orifice plate PropaneBottom side of boiler front section When required IId Prepare boiler high altitude kitAltitudes above 5,500 feet only White Hose RedIIe Prepare boiler place in position Rotate Prepare boiler for test Fig IIf Prepare boiler pressure testPerform hydrostatic pressure test Fill and pressure testPiping connections for hydrostatic test IIIa Water piping overview For heating system with See pages 27 30Install relief valve IIIb Water piping relief valveAir separator IIIc Water piping boiler connectionsSupply & return connections Expansion tankPiping closed IIId Water piping all systems Zoning with circulatorsIIIe Water piping baseboard system Baseboard system pipingIIIf Water piping radiator system Radiator system pipingIIIg Water piping single-zone radiant or heat pump system Multi-zone radiant heating system piping Outdoor reset controlIIIh Water piping multi-zone radiant system IIIi Water piping snow melt system Manual bypass valves for fixed temp operation onlyIIIj Water piping water chiller systems Water chiller systemsIV Venting and combustion air Propane Gas Connecting gas supply piping to boilerGas piping Feet Wiring connections VI Field wiringElectrical installation must comply with ThermostatsField wiring Factory wiring VIIb Start-up preparation Freeze protection when usedVIIa Start-up overview Verify water chemistryCheck for gas leaks VIIb Start-up preparationVerify gas/air orifice plate Fill the system with waterPerform final checks before starting boiler VIIc Start-up read SectionVIId Start-up to operate boiler Start the boilerVIId Start-up operate boiler VIIe Start-up if boiler doesn’t startCheck Gas Control Set Point Connect and adjust manometerVIIf Start-up altitude over 5,500 feet only At Least Inches VIIIa Check-out procedure overview Check-out procedure checklistVIIIb Check-out procedure checklist Shows the ladder wiring diagram for the GV series 3 boiler IXa Operation overviewIXb Operation sequence StepsIXb Operation wiring diagrams Ladder diagram legendGCM For Your Safety Read Before Operating IXc Operation lighting instructionsWhite-Rodgers gas valve model 36E Xa Service and maintenance overview Xb Service and maintenance schedule Service technicianXc Service & maintenance annual start-up Annual start-up only by qualified service technicianStart-up Xc Service & maint. annual start-upcont Annual start-up check/testIgniter Expansion tankGauges Review with owner Annual start-up owner reviewBoiler relief valve Condensate drain line Check valve assembly To remove the blower assembly Igniter XIa Troubleshooting overview Check the following XIb Troubleshooting proceduresBefore troubleshooting XIc Troubleshooting air pressure switch Checking the air pressure switchIgniter XId Troubleshooting servicing tipsBlower Housing Gas ValveXIe Troubleshooting control module Control ModulePower XIf Troubleshooting common problems Symptom Common Causes Possible CorrectionsSymptom Common Causes Possible Corrections XIg Troubleshooting GCM lights Chart 1 Troubleshooting Power light statusChart 2 Tstat Circ & Power lights flashing Chart 3 Limit & Power lights flashing Chart 4 Pres Switch & Power lights flashing Chart 5 Flame & Power lights flashing Chart 6 Tstat Circ light flashing and Power light on steady Chart 7 Limit light flashing and Power light on steady Is thermostat circuit closed continuity across wires? XIIa Replacement parts overview XIIb Replacement parts accessory bag Water trim bag assembly #1XIIc Replacement parts section assembly Description Model Weil-McLain Number Part number85041 XIId Replacement parts jacket assembly 422-200-22885042 XIIe Replacement parts Blower assembly 382-200-340Vent starter tee not included XIIf Replacement parts trim assembly Description Weil-McLain Number Part number85048 XIIg Replacement parts interior panel Interior panel Xiii Dimensions and ratings NumberDOE Gold GV Water boiler Series