Raypak 337A, 406A, 206A, 407A, 336A, 207A, 267A, 266A operating instructions Troubleshooting, Mechanical

SECTION 5 - TROUBLESHOOTING

MECHANICAL

IMPORTANT NOTICE These instructions are intended for the use of qualified personnel who are specifically trained and experienced in the installation of this type of heating equipment and related system components. Installation and service personnel may be required by some states to be licensed. Persons not qualified shall not attempt to install this equipment nor attempt repairs according to these instructions.

PROBLEM	CAUSE	SOLUTION
Harmonics, or whining noise	U.G. inoperative	Check movement by putting in hot water (110°F or higher).
		If no movement, replace.
	*Debris or restriction in system	Locate the restriction and remove. Flush system and clean.
	*Debris in gas line	Remove debris or blow out gas line.
	Low flow	Scale forming in heat exchanger - clean heat exchanger and
		check pool pH and total alkalinity.
Heater going on and off	Dirty filter	Clean or replace filter.
continuously	Low water level in pool	Raise water level.
	External bypass setting out of
	adjustment	Adjust bypass.
	*Pressure switch out of adjustment	Adjust pressure switch.
Liming or scale forming in	Pool water	See Water Chemistry on page 2.
exchanger	Bypassing too much water	Inspect bypass for movement, if no movement, replace.
	U.G. not functioning	Replace if no movement when heated.
Sooting	High flow rates	Reduce by adding manual bypass valve.
		Adjust manual bypass valve until heater outlet water
		temperature is between 105°F and 110°F.
	U.G. Inoperative	Check movement by putting in hot water (110°F or higher).
		If no movement, replace.
	*Air starvation	Refer to installation instructions.
	*Improper venting	Follow recommended installation instructions.
	*Insects or debris clogging
	burner intake ports	Clean burners.
Pilot outage	Low gas pressure	Adjust gas pressure.
	Restricted pilot	Clean pilot.
	Weak pilot generator	Replace pilot.
Yellow lazy flame	Low gas pressure	Adjust gas pressure.
	*Insects or debris clogging
	burner intake ports	Clean burners.
Outer jacket very hot	*Broken refractory caused by
(paint blistered)	shipping damage or improper
	combustion	Replace refractory panels.
	Excessive sooting of heat exchanger..	Determine cause of sooting & correct.
Takes too long to heat	Under-sized heater	Calculate heating capacity of heater:
pool or spa			Htr. output(BTUH)
		Pool gallonage x 8.33 or refer to heater sizing chart.
		This does not take into account heat loss due to weather.
	Filter not running long enough	Reset time clock.
	Dirty filter	Clean filter.
	Gas line or meter undersized	Refer to installation instructions.
Leaking at well	Overacid	Replace well and maintain proper water chemistry.
Leaking at heat exchanger	Overacid	Replace heat exchanger and maintain proper water chemistry.
Gasket brittle and leaking -	Heater running after pump shuts off....	See Pressure Switch Adjustment.
(overheated)	Refractory damage	Replace refractory.
	Sooted heater	Determine cause of sooting and correct.
Combustion fan not running	Fan relay	Replace fan relay.
	Fan	Loose connection or failed motor.
	Burned motor	Incorrect wiring, replace blower.
	Air pressure switch	Replace air switch.

* Indicates symptom which usually occurs on initial start-up.

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