GSW 319594-000 Viii Troubleshooting Guide, Robertshaw 2000WDER and White-Rodgers Intelli-VentTM

Page 32

VIII) TROUBLESHOOTING GUIDE

Robertshaw 2000WDER and White-Rodgers Intelli-VentTM

	SYMPTOM		POSSIBLE CAUSE(S)		CORRECTIVE ACTION

		1.	No Power to unit.	1.	Plug in power cord, check fuses/supply
		2.	Thermostat setting too low.		voltage.
		3.	Defective air pressure switch (must be	2.	Increase thermostat temperature set-
	BLOWER WILL NOT		open at start-up before blower is ener-		ting.
	START.		gized).	3.	Replace air pressure switch.
		4.	Defective blower.	4.	Replace blower.
		5.	Disconnected or loose wire.	5.	Repair/reconnect wires.
		6.	Control locked out.	6.	Reset – determine cause of lockout.

		1.	Air pressure switch not closing due to	1.	Determine cause of insufficient draft.
			insufficient draft - check for:		Check draft with manometer at pres-
					sure switch (refer to Table 2 for mini-
					mum acceptable draft settings).
			a) vent piping blocked,		a) remove blockage,
			b) piping length too long,		b) reduce vent length/increase vent
			c) frozen vent termination,		size,
	BLOWER RUNS		d) clogged/dirty blower.		c) clear termination of snow/ice,
	CONTINUOUSLY.	2.	Disconnected, torn or blocked pressure		d) clean blower wheel.
			sensing tubing from air pressure switch	2.	Reconnect or replace pressure sensing
			to blower housing.		tubing.
		3.	Air pressure switch not closing due to	3.	Replace defective pressure switch.
			defective switch.	4.	Determine cause of overheating check
		4.	High limit switch open due to excessive		for: overfiring, insufficient air supply,
			vent temperature or defective switch.		high ambient air temperature (once
					activated high limit must be replaced).

		1.	120VAC polarity reversed at 120VAC	1.	Reverse polarity at 120VAC outlet
	HOT-SURFACE IGNITER		outlet receptacle.		receptacle.
	HOT-SURFACE IGNITER	2.	Defective hot-surface igniter.	2.	Replace	igniter (Check for 120VAC
	NOT GLOWING FOLLOW-	2.	Defective hot-surface igniter.	2.	Replace	igniter (Check for 120VAC
	NOT GLOWING FOLLOW-				across I1 & I2, Robertshaw only).
	ING WARM-UP PERIOD.				across I1 & I2, Robertshaw only).
	ING WARM-UP PERIOD.	3.	Defective Control.	3.	Replace control.
		3.	Defective Control.	3.	Replace control.
		4.	Defective Flammable Vapour Sensor.	4.	Replace Flammable Vapour Sensor.

		1.	No gas supply.	1.	Check/turn on gas supply.
		2.	Gas control switch in “OFF” position.	2.	Turn control switch to “ON” position.
		3.	Insufficient gas supply.	3.	Ensure correct supply pressure for gas
					type (Nat Gas 7.0 in. w.c. (1.74 kPa))
					(Propane 11.0 in. w.c. (2.74 kPa)).
		4.	Incorrect manifold gas pressure.	4.	Check/adjust for correct manifold gas
					pressure (NG 3.5 in. w.c.(0.87 kPa)),
					(Propane 10.0 in. w.c. (2.49 kPa)).
	CONTROL LOCKED OUT.	5.	Incorrect gas type.	5.	Ensure	correct gas	type for water
	CONTROL LOCKED OUT.	6.	Defective igniter/loose or disconnected		heater model.
		6.	Defective igniter/loose or disconnected		heater model.
			wire.	6.	Replace	defective	igniter/reconnect
		7.	Improperly positioned, dirty, or defec-		wiring.
			tive flame rod/loose or disconnected	7.	Reposition, clean, or replace defective
			wire.		flame rod/reconnect wiring.
		8.	Burner orifice clogged.	8.	Remove obstruction.
		9.	Blocked water heater flue.	9	Remove blockage/clean flue.
		10.Defective control.		10.Replace Control.
		11. Defective Flammable Vapour Sensor.		11. Replace Defective Flammable Vapour
					Sensor.

		1.	Internal control fault.	1.	Replace control.
	CONTROL LOCKED OUT.	2.	ECO failure – excessive water temper-	2.	Replace control.
	*SOLID GREEN LED.		ature.
		3.	Excessive humidity/damp environment.	3.	Allow control to dry.

			– 32 –

Image 32

Contents For Your Safety What to do if YOU Smell GASViii Troubleshooting Guide Page Introduction User ResponsibilitiesII Safety For Installations in CanadaFor Installations in the United States Safety Warning Flammable VapoursRelief Valve Requirements T&P Flooding/FreezingLocation Requirements Valves For Hot Water Supply Systems, Ansi Z21.22/CSAEarthquake Zones Clearances and AccessibilityCloset Installation & Floor Surfaces Gas Leak Testing Gas Supply PressureGas line purging Gas Operating PressuresVentilated Space Air Requirements for Canadian InstallationsAir Requirements Installations Local CodesExhaust Venting Venting terminations and sizing General Venting LayoutUse of Solvent Cement and Primer Use only in well-ventilated areasDo not use near flame or open fire Use only the Solvent Cement and PrimerVent pipe connection to blower Filling the Water Heater Piping Installation Water SupplyTemperature and Pressure T&P Relief Valve Temperature and Pressure Relief ValveClosed System/Thermal Expansion Discharge Line/DriptubeWiring Diagram White-Rodgers Control Flammable Vapour Sensor Flammable Vapour Sensor exploded viewResettable Lockout Water Heater OperationInstallation Checklist IV Operating Instructions Caution Mixing ValvesRisk of scalding Hot water can produce third degree burnsLighting Instructions Robertshaw Heater Shutdown System Error CodesGas Control/Thermostat Lighting Instructions White-Rodgers Approximately 21C 70F when shipped from factory Temperature AdjustmentControl is adjusted to its lowest temperature setting Intelli-VentTMSystem Error Codes Heater Shutdown Symptom Possible Causes Corrective ActionSymptom Possible Causes Corrective Action VI Maintenance Operation Burner FlamesOperational Conditions Draining and FlushingGas Control Anode Rod ReplacementRoutine Preventative Maintenance Blower Maintenance Installation VII Combo HeatingSystem Requirements Tice such as Ashrae Handbooks, HraiViii Troubleshooting Guide Robertshaw 2000WDER and White-Rodgers Intelli-VentTMInterchangeable Items not supplied with the water heater Reference Parts ListingIX Reference Parts Parts Reference Illustration Robertshaw and White-Rodgers systems are not InterchangeableLimited Warranty WHO is CoveredHOW the Original Owner can Make a Warranty Claim