Raypak 850, 300 operating instructions XFyre Fault Text

WARNING: When servicing or replacing any components of this unit be certain that:

• The gas is off.

• All electrical power is disconnected.

WARNING: Do not use this appliance if any part has been under water. Improper or dangerous operation may result. Contact a qualified service technician to inspect the boiler and to repair or replace any part of the boiler that has been under water prior to placing the boiler back in operation.

NOTE: The onboard fault history only records faults that lock out the system (FXX faults).

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

CAUTION: If overheating occurs or the gas supply fails to shut off, do not turn off electrical power to the circulating pump. This may aggravate the problem and increase the likelihood of boiler damage. Instead, shut off the gas supply to the boiler at the gas service valve.

XFyre Fault Text

Error Text		Remedy
OUTDOOR SENSOR FOU	Inspect wiring from outside sensor for damage or shorted connections repairing as necessary. Measure
(Displays only if Screen 21 of the	resistance of outdoor sensor and compare to resistance chart on page 48. If not within range on chart,
Installer Menu is ON)	shorted or open, replace sensor.
LINE VOLTAGE E19	Inspect power wiring to boiler and repair as necessary. If connected to line voltage, notify power compa-
	ny. If connected to alternate power source such as generator or inverter make sure line voltage
	frequency supplied by the device is 60 Hz.
	1.	Ensure that the flue is not blocked.
BLOCKED VENT FLU	2. Check the switch wiring by applying a jumper in place of the switch. If the code clears with the jumper
	in place REPLACE the flue switch and connect the wires to the new switch BEFORE running unit.
	WARNING: Do not use jumper to remedy this error. Faulty switch MUST be replaced. Failure to
	do so could result in serious injury or death.
	1.	Check boiler feed water system to be sure it is supplying make up water to boiler system.
LOW WATER LEVEL LEO	2.	Make sure all air is bled from the system.
	3.	Check for leaks in boiler and system piping and repair as necessary.
	4.	Inspect low level switch and wiring for damage and repair as necessary.
	1.	Check line voltage. Must be between 100–128 VAC.
	2. If available, connect PC and using service software check the 24v supply display in the lower left cor-
	ner of the screen. The number displayed here must be greater than 128 and should be greater than 250.
	Use this as a troubleshooting guide as you follow the steps below.
	3. Remove 10-pin Molex connector from customer connection board. If LOU code clears, then the prob-
24 VOLT LOW LOU	lem is with external sensor wiring. Examine external sensor wiring for shorts to ground repairing as
	necessary. If LOU code is still present and the boiler is so equipped, disconnect high gas pressure
	switch, then low gas pressure switch, then UL 353 low water cutoff in this order one at a time to see if
	LOU code clears. Replace faulty part. Check low voltage wire harness in boiler for shorts to ground.
	4.	If LOU only occurs when burner tries to light, check gas valve for excessive current draw.
	5.	If LOU is present with the low voltage harness disconnected from the control board, replace the con-
	trol board.
LOW WATER FLOW	1.	Check to see if boiler circulator is functioning. Repair as necessary.
(if unit is operating)
or	2. Make sure water is flowing in the system. Check for valves that should be open, plugged filter screens,
TEMPER BLOCKING	etc.
(if Flow Switch is OFF)	3.	Check flow switch and wiring. Repair as necessary.
	1.	Check circulation pump operation.
	2. Ensure that there is adequate flow through the boiler by accessing the status menu and assuring that
HIGH TEMPERATURE F00	there is less than a 50°F rise from the return thermistor to the supply thermistor.
	3.	Check thermistor reading on supply thermistor. Replace switch if faulty.
	4.	If this is a new installation, disconnect the two TT wires from the zone control, and connect the wires
	together.
	Depress the ESC/RESET button. If the fault clears, the problem is outside the boiler.

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