Raypak P-R185B To P-R405B - Manual (Page 39)

MECHANICAL (FOR QUALIFIED SERVICE PERSONNEL ONLY)
IMPORTANT NOTICE These instructions are primarily intended for the use of qualified personnel 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.............................................. Backwash 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 on Pool water............................................. Recommended pH should be between 7.4 and 7.8
heat exchanger Total alkalinity 100-150 PPM maximum.
Hardness 150-400 PPM maximum.
Sooting High flow rates..................................... Reduce by adding manual bypass valve. Adjust
manual bypass valve until heater outlet water
temperature is between 105° 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 long time to heat Calculate temperature in °/hr................ Heat rise (°/hr.)= Htr. output
pool or spa. 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.
Liming Bypassing too much water................... Inspect bypass for movement, if no movement,
replace.
U.G. not functioning.............................. Replace if no movement when heated.
Leaking at well. Overacid............................................... Replace well and maintain water chemistry properly.
Leaking at heat exchanger. Overacid............................................... Replace heat exchanger and maintain chemistry
properly.
Gasket brittle and leaking - Heater running after pump
(overheated). shuts off............................................... See pressure switch adjustment.
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
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SECTION 5 / TROUBLE SHOOTING GUIDE
(* Indicates symptom usually occurs on initial start-up.)