Raypak 267A No No No, Diagnostic Readouts, Digital Control Logic - Flow Chart, minutes maximum

DIGITAL CONTROL LOGIC - FLOW CHART

Power On

Is the water temperature displayed?

YES

Push MODE

switch to select "Pool" or "SPA"

Push Temp

arrow to scroll to

desired temperature

Water temperature and set temperature displayed?

YES

CFH

(call for heat) will

display briefly

SPK

(spark) will display until pilot is lit up to 2

minutes maximum

Flame icon displayed and flashing?

(pilot lit and rectified)

YES

Heater Fired?

YES

END

NO

NO

NO

NO

•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)

REM and Water Temperature

displayed and flashing

(a remote control is controlling the heater) Note: Disconnect the remote by turning the remote function off. See page 35 for instructions.

NO

Is SERVICE displayed and flashing?

YES

Diagnostic Readouts

"SNS" - Temperature sensor out of range (replace sensor)

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.

Sensor resistance at various temperatures

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

PRS Pressure switch. Verify water flow and pressure CLEAN FILTER / STRAINER - backwash if neccessary.

HL1 High limit switch. Verify water flow. Inspect internal HL2 Thermostat (Unitherm Governor) and bypass valve.

ROL Rollout Sensor - Check for blocked heat exchanger and soot. Atmospheric Units - Replace fusible link.

Low NOx Units - Press manual reset button.

CLK Fireman or Remote switch connected to safety loop is in the OFF mode.

VNT Vent switch open. Check connections to the board.

If extractor installed, troubleshoot extractor.

IGN Ignition control failure. Check power at PV.

PLT Pilot failure. Check spark (bad ignition circuit or hi-tension wire). Verify gas to the heater. Verify valve operation (gas present at tube fitting). Verify clean pilot orifice and clearance from igniter to ground hood. If pilot is lit, verify that the flame is rectified (the spark will be off)

Verify power at MV on P-4 Terminal on digital circuit board.

Verify power to valve MV voltage. (Replace valve.)

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