Troubleshooting - Rheem Raypak R207A Installation And Operation Manual

10. 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)
Takes too long to heat pool or
spa
Leaking at heat exchanger
Gasket brittle and leaking -
(overheated)
Combustion fan not running
"Fan 5 min Delay" signal or
"Fan Lockout" signal
* Indicates symptom which usually occurs on initial start-up.
Possible Cause
Unitherm governor inoperative ................
*Debris or restriction in system ...............
*Debris in gas line...................................
Low flow..................................................
Dirty filter ................................................
Low water level in pool ...........................
External bypass setting out of
adjustment ..............................................
Pressure switch out of adjustment..........
Pool water...............................................
Bypassing too much water .....................
Unitherm governor not functioning .........
High flow rates ........................................
Unitherm governor inoperative ...............
*Air starvation .........................................
*Improper venting ...................................
*Insects or debris clogging burner intake
ports........................................................
Low gas pressure ...................................
Restricted/dirty pilot ................................
Low gas pressure ...................................
*Insects or debris clogging burner intake
ports........................................................
*Broken refractory caused by shipping
damage or improper combustion ............
Excessive sooting of heat exchanger .....
Under-sized heater .................................
Filter not running long enough ................
Dirty filter ................................................
Gas line or meter undersized .................
Overacid .................................................
Heater running after pump shuts off .......
Refractory damage .................................
Sooted heater .........................................
Fan relay.................................................
Fan .........................................................
Burned motor ..........................................
Air pressure switch .................................
Corrective Action
Check movement by putting in hot water (110°F [40°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
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 and/or electrode
Adjust gas pressure
Clean burners
Replace refractory panels
Determine cause of sooting and correct
Calculate heating capacity of heater
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
Reset time clock
Clean filter
Refer to installation instructions
Replace heat exchanger and maintain proper water chemistry
See Pressure Switch Adjustment
Replace refractory
Determine cause of sooting and correct
Replace fan relay
Loose connection or failed motor
Incorrect wiring, replace blower
Replace air switch
37