Troubleshooting - Raypak 406A Installation And Operation Manual

11. TROUBLESHOOTING

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
Harmonics, or whining noise
Heater going on and off
continuously
Liming or scale forming in
exchanger
Sooting
Pilot outage or "Weak Flame"
signal
Yellow lazy flame
Outer jacket very hot (paint
blistered)
* Indicates symptom which usually occurs on initial start-up.
40
Possible Cause
U.G. inoperative ......................................
*Debris or restriction in system ...............
*Debris in gas line...................................
Low flow..................................................
When the above listed recommendations do not generate acceptable results, the following service kits
are recommended:
1st recommendation:
105F UG Service Kit
018759F
018759F
018758F
018758F
Dirty filter ................................................
Low water level in pool ...........................
External bypass setting out of
adjustment ..............................................
*Pressure switch out of adjustment ........
Pool water...............................................
Bypassing too much water .....................
U.G. not functioning ................................
High flow rates ........................................
U.G. inoperative......................................
*Air starvation .........................................
*Improper venting ...................................
*Insects or debris clogging burner intake
ports........................................................
Low gas pressure ...................................
Restricted/dirty pilot ................................
Weak pilot generator ..............................
Low gas pressure ...................................
*Insects or debris clogging burner intake
ports........................................................
*Broken refractory caused by shipping
damage or improper combustion ............
Excessive sooting of heat exchanger .....
UNCONTROLLED DOCUMENT IF PRINTED
PRELIMINARY
Check movement by putting in hot water (110°F [43°C] or
higher)
Locate the restriction and remove. Flush system and clean
Remove debris or blow out gas line
Scale forming in heat exchanger - clean heat exchanger and
check pool pH and total alkalinity
2nd recommendation:
Coil Service Kit
019104F
019203F
019204F
019205F
Clean or replace filter
Raise water level
Adjust bypass
Adjust pressure switch
See Water Chemistry on page 5
Inspect bypass for movement, if no movement, replace
Replace if no movement when heated
Reduce by adding manual bypass valve
Adjust manual bypass valve until heater outlet water temp is
between 105°F and 110°F (40°C and 43°C)
Check movement by putting in hot water (110°F [43°C] or
higher). If no movement, replace
Refer to installation instructions
Follow recommended installation instructions
Clean burners
Adjust gas pressure
Clean pilot
Replace pilot
Adjust gas pressure
Clean burners
Replace refractory panels
Determine cause of sooting and correct
Corrective Action
Used on Models
206-207
266-268
336-337
406-408