Friedrich R410A manual Error Codes and Alarm Status

ERROR CODES AND ALARM STATUS

Unit Control Panel

The display shown below has four digits. The left two digits indicate the error code # ( 1 to 24 ), The On/Off icons above these two digits indicate the currents state of the error code. The right two digits show the history count (up to 99) of the associated error code. The display contains a maintenance icon (wrench) that will illuminate to indicate when the unit needs service. This wrench indicates an error code # is on (active). To find out which one, check all error codes.

Check Error Codes

1. Press the Enter key to activate the display.

2. Each press of the scroll key display the next error code.

		Clear History Counters
		1. Press & hold the Enter key and the
		Scroll Key for 6 seconds.
Error
Code	Problem	Action
1	Front Panel Button Stuck For More Than 20 Seconds	Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch input.
2	Input Voltage Out of Specification (187 - 253)	Unit stops, open all relays until voltage is back within specs then resume operation.
3	Indoor Temperature Sensor is Open or Shorted	Unit defaults to 75°F in COOLING or 68°F in HEATING and will continue to operate
		if setting is below 75°F in cool mode or if above 68°F in heat mode.
		The unit's control board defaults to 40°F. It will override the sensor and the unit will
4	Indoor Coil Temperature Sensor is Open or Shorted	continue to operate.
		The unit defaults to 20°F, overriding the sensor. The unit will continue to operate.
		Using Elec Heat if available for HEATING. If not available, it will use HEAT PUMP if
5	Outdoor Coil Temperature Sensor is Open or Shorted	the outdoor temperature allows.
		The unit will shut down for 5 minutes. resume operation for 3 minutes. If test fails 3
6	Outdoor Coil > (grater than) 175 F	times, the unit operation is locked out. See troubleshooting page 42. To reset,
		turn power off and on.
		The compressor will turn off and the High Fan speed will run. When coil temp reachs
7	Indoor Coil < (less than) 30 F for 2 consecutive minutes	45°F the unit will resume operation after lockout time.
8	Unit Cycles > (greater than) 9 Times per hour	The unit will continue to operate and be monitored.
9	Unit Cycles < (less than) 3 Times per Hour	The unit will continue to operate and be monitored.
10	Not Applicable	Not Applicable
11	WallStat Problem or Connection Issue	The unit will not operate.
12	Not Applicable	Not Applicable
		If unit is cooling or heat pump is on, shut down compressor. Run high fan until
	VPAK 24K Unit Only	switch closes, then resume operation. The third occurance in 1 hour locks unit out.
13	High Pressure Limit Switch is Open	Applicable to 24K unit only. To reset, turn power off and on.
14	Not Applicable	Not Applicable
		If indoor coil temperature is less than ambient temperature for 3 minutes, the unit will
15	Heat Pump Error	use electric heat to satisfy the heating demand. Causes could be bad reversing
		valve, heat load too high.
		Occurs if the indoor ambient temperature range falls below 0°F or greater than 130°F. The
16	Temperature beyond operating limits	error code will remain on until the temperature reaches the operating range and then
		the unit will return to normal operation.
17	Equipment Doesn't Meet Minimum Configuration	The compressor must be enabled and have at least 2 fan speeds.
18	Not Applicable	Not Applicable
19	Not Applicable	Not Applicable
20	Not Applicable	Not Applicable
21	Not Applicable	Not Applicable
	(Not an error code)	Unit will use electric heat to satisfy heating demands until the temperature equals or
22	Outdoor Coil Temperature < 30 F for 2 consecutive minutes	exceeds 45°F. Applicable for Heat Pump models only.
23	Not Applicable	Not Applicable
24	Not Applicable	Not Applicable

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