Raypak 259B, Installation & Operating Instructions Manual

Page: 43 / 48

43
Power On
Is the water
temperature displayed?
NO
YES
Push MODE
button to select
" Pool " or " Spa "
Push UP or DOWN
button to scroll to
desired temperature
NO
Water temperature
and set
temperature
displayed?
YES
“ Purge ”
NO
NO
YES
YES
Water temp displayed?
(rectified)
Heater Fired?
END
• Check On/Off switch (under lid on control panel)
• Check for 120/240 volts to the transformer
(time clock, circuit breaker, wire connections)
• Check for 24 volts to Circuit Board (P6 connector)
“ Remote ” and Water Temperature displayed
(a remote control is controlling the heater)
Note: Disconnect the remote by turning the
remote function off. See page 38 for instructions.
NO
YES
Is a fault code displayed and flashing?
Diagnostic Readouts
“ Sensor Failure ,” “ Sensor Open ” or “ Sensor Short ” -
Temperature sensor out of range (replace sensor)
Verify power at MV on P-4 Terminal on digital circuit board.
Verify power to valve MV voltage. (Replace valve.)
“ Spark ”
Sensor Failure
Inspect thermister, wires, and connector at Terminal P1
Check resistance value of the thermister. Reference to chart below.
Replace thermister if not within 10% of values shown below.
If okay, replace Circuit Board.
Temp Degrees F 40 50 60 70 80 90 100 106
Resistance (k)
261.1 199.0 153.1 118.8 93.0 73.3 58.3 51.0
If okay, replace Circuit Board
Sensor resistance at various temperatures
“ Water Sw Open ” Water flow switch. Verify water flow and pressure. If water
connections were reversed, verify the location and direction
of the water flow across the flow switch.
CLEAN FILTER / STRAINER - backwash if neccessary.
“ Hi Limit 1 Fault ” High limit switch. Verify water flow. Inspect internal
“ Hi Limit 2 Fault ” bypass valve.
“ Clock/Fireman Sw ” Fireman or Remote switch connected to safety loop is in the
OFF mode.
“ Blocked Vent ” Vent switch open. Check connections to the board.
Check for blockages in the vent.
“EOL” (at start-up) Check for stuck MODE button.
“ Ignition Lockout ” Ignition lockout. Check spark (bad ignition circuit or
hi-tension wire).
“ Ignition Failure ” Ignition failure. Verify gas to the heater. Verify valve operation
(gas present at tube fitting).
CONTROL LOGIC - FLOW CHART