Friedrich AC Error Codes| Troubleshooting

Friedrich AC Error Codes| Troubleshooting

Friedrich AC Error Codes| Troubleshooting

  1. Friedrich Portable Error Codes
  2. Friedrich PTAC Error Codes
  3. Friedrich Heat Pump Error Codes
  4. Friedrich Multi Zone Air Conditioner
  5. Friedrich Room/Window Air Conditioner

1.Friedrich Portable Error Codes:

Error code reason


E1 electrical sensor is short on both temperature and PCB.


E2 Lack of power of temperature sensor copper tubes and PCB wires.


E4 The signal indicates complete or poor contact to the tank’s water tank. The user needs to take out the rubber stopper which is located at the bottom of the unit, allowing water to drain out. Check the plug is wired correctly.


Frederich Port-able AC Troubleshooting

Friedrich AC Error Codes| Troubleshooting

Problem: the air conditioner does not work
Possible reasons:

1. Have power failure
2. plug is not connected
3. The timer is unable to work
4. the main switch is not pressed
the treatment:
1. Wait for the power out
2. Connect the plug
3. Provide repair
4. press the main switch


Problem: The air conditioner only works for short periods
Possible reasons:
1. Set temperature is very close to room temperature
2. There is something blocking the suction vent on the back of the condenser
3. Fan is blocked on condenser
the treatment:
1. Decrease the setting temperature
2. Remove any obstacles
3. Provide repair
Frederick Portable AC Remote Control


Problem: Air conditioner switches are constantly off
Possible Cause: Malfunction
Remedy: remove the plug and contact the service center


Problem: The air conditioner works but it does not cool the room
Possible reasons:
1. A window is opened
2. There is a source of conducting heat in the room (burner, lamp, etc.), orthe room is crowded
3. Air filter is full
4. The capacity of the air conditioner is not suitable for the condition or size of the room
5. The evaporator is frozen
the treatment:
1. Close the window
2. Remove / switch off the heat source
3. Decrease the set temperature
4. Clean the filter
5. Clean the airfilter
6. If necessary, change purifier filter
7. Do not operate equipment at very low temperatures (below ° C)


Problem: The device is too noisy and vibrates violently

Possible Cause: The compressor blocker device has become loose or the copper pipe is in contact with the body of the set
Remedy: Provide repair


Frederich Portable AC Troubleshooting

Friedrich AC Error Codes| Troubleshooting


Problem: When the unit’s LED shows E1
Possible Cause: There may be a broken or short circuit on the ambient temperature sensor
Remedy: Please check if this is a sensor problem. If not, contact the manufacturer to replace the PCB.


Problem: When the unit’s LED shows E2
Possible Cause: There may be a broken or short circuit on the brass temperature sensor (applicable only to the COOI / heat unit).
Remedy: Please check if this is a sensor problem. If not, contact the manufacturer to replace the PCB.


2. Friedrich PTAC Error Codes

Friedrich AC Error Codes| Troubleshooting

The Frederich Smart Center constantly monitoring the operation of the PT-AC unit and will store the service code if certain conditions are witnessed. In some cases the unit may take action and shut down the unit until the conditions are corrected.

PTAC – PD Series
Packaged Terminal Air Conditioner
Packaged Terminal Heat Pumps

Error code problem


E1 high pressure system protection


E2 antifreezing protection


F0 in refrigerant defects


E4 High discharge temperature protection of compressor


E5 Overcrout Protection


E6 communication malfunction


E8 High Temperature Resistant Protection


EE EEPROM Malfunction


EU limit / freq-uency reduction due to high temperature of module


C5 jumper cap malfunction protection
Foam collecting refrigerant


F1 indoor ambient temperature sensor is open / small circuit


F2 indoor evaporator temperature sensor is open / small circulated


F3 outdoor ambient temperature sensor is open / small circulated


F4 outdoor condenser temperature sensor is open / small circulated


F5 outdoor discharge temperature sensor is open / small circulated


F6 limit / decrease freq-uency due to over lode


F8 freq-uency decrease due to overcrack


F9 Reduction in freq-uency of due to high air discharge


FH limit / decrease freq-uency due to antifreezing


PH voltage too high for DC bus bar


DC bus bar PL voltage is too low


P0 compressor minimum freq-uency in test state


P1 compressor rated freq-uency at test stage


P2 compressor maximum freq-uency in test state


P3 compressor intermediate freq-uency in test state


P5 Overcrack protection of phase current for compressor
Capacitor PU charging fault


P7 module temperature sensor circuit malfunction


P8 Module High Temperature Protection


H0 freq-uency of decreases due to high temperature resistor during heating operation


H1 Defrosting


H2 static surrender protection


H3 over lode protection for compressor


H4 system is abnormal


H5 IPM Security


H6 internal motor (fan motor) does not operate


H7 Desynchronizing of Compressor


HC PFC Security


L3 Outdoor DC Fan Motor Malfunction


L9 Power Protection


LP does not match indoor unit and outdoor unit


LC failure startup


U1 malfunction of phase current detection circuit for compressor


U3 malfunction of voltage dropping for DC bus bar


U5 malfunction current detection of complete units


U7 four-way valve is abnormal


U9 Zerocrossing Outdoor Unit Malfunction
Digital Control Diagnostics and Test Mode


Error Code: 02
Code Translation: Extremely low voltage conditions exist <198V for 230V units and <239V for 265V units
Action taken by the unit: shutdown unit. Display error code and flash. Power is restored once the voltage is increased for the normal level system
Possible reasons:
Supply insufficient power supply
 Defector
Use Blown Fuse


Error Code: 03
Code Translation: Return air thermistor sensor open or short circuit
Action taken by the unit: set the return air sensor = 75 ° F. Optional flash set point and error code. Quit running unit
Possible Cause: Defective sensor


Error Code: 04
Code translation: Indoor coil thermistor sensor open or short circuit
Action taken by the unit: Set ID coil temp = 40 ° F. Optional flash set point and error code. Quit running unit
Possible Cause: Defective sensor


Error Code: 05
Code Translation: Outdoor coil thermistor sensor open or short circuit
Action taken by the unit: setaud coil temp = 20 ° F. Optional flash set point and error code. Automatically change to electric heat mode only. Quit running unit
Possible Cause: Defective sensor


Error Code: 06
Code Translation: If O.D. Coil temperature> 175 deg F for 2 consecutive minutes. (Heat pump model only)
Action taken by the unit: optional flash set point and error code. Shut down unit for 5 minutes, then try again 2 times, if it fails for the 3rd time, close the unit.
Possible reasons:
Coil Dirty Coil
Failure Fan Motor Malfunction
 Restricted air flow
. Non-condensation in refrigeration system


Error Code: 07
Code translation: ID coil temperature <30 deg for 2 consecutive minutes
Action taken by the unit: optional flash set point and error code. The compressor remains closed until the indoor coil thermistor reaches 45 ° F, and then continue operating the fan, activating the compressor. However, the compressor must still wait for a lockout time of 180 to 240 seconds
Possible reasons:
Filters Dirty Filters
Coil Dirty Coil
Failure Fan Motor Malfunction
 Restricted airflow
 Improper refrigerant charge
. Restriction in refrigerant circuit


Error Code: 08
Code translation: if unit cycle (heat or cold demand)> 9 times per hour
Action taken by the unit: optional flash set point and error code. Keep unit running
Possible reasons:
 Unit Maintenance
 Low load conditions


Error Code: 09
Code translation: if unit cycle (heat or cold demand) <3 times per hour
Action taken by the unit: optional flash set point and error code. Keep unit running
Possible reasons:
Un unit underestimated
 High Load Conditions


Error Code: 10
Code Translation: Room Freeze Protection Trigger
Action taken by the unit: optional flash set point and error code. Keep unit running
Possible reasons: room temperature drops below 40 ° F


Friedrich AC Error Codes| Troubleshooting

Frederich PT-AC Parts
Frederich PT-AC Troubleshooting


Reason: The system is not regularly serviced or monitored (half-yearly or yearly)
Results: Premature component failures, poor performance, and increased operating costs can result


Reason: Air filters are not cleaned regularly and get blocked by particles
Result: Poor cooling, icing and water problems, as well as component failures and operating costs may increase


Reason: Condenser coil not maintained properly (blocked with particles)
Results: Poor cooling may result in component failures and increased costs


Reason: Evaporator coil not maintained properly (blocked with particles)
The result: poor cooling, icing and water problems, and operating costs may increase.


Reason: Components that show signs of fatigue are not replaced.
Result: may result in multiple service calls, poor performance, and increased operating costs


Reason: Drain and drain lines are not maintained
Result: May result in water and odor problems


3. Friedrich Heat Pump Error Codes

E1 SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more often (more than 6 times per hour).


E2 KEYBOARD STUCK ERROR: If a key button is stuck or pressed for 20 seconds or more, the unit gets stuck. If the key is stuck, it will be ignored until released. If the “mode” key(button) is stuck, the unit’s function will default to cool mode.


E3 FROST PROBE OPEN: Normal operation allowed. Change the probe.


E4 FROST PROBE SHORT: Normal operation allowed. Change the probe.


E5 INDOOR PROBE OPEN: The control assumes that the indoor ambient temperature is 90 degrees F and the unit will operate. Change the probe.


E6 INDOOR PROBE SHORT: The control assumes that the ambient temperature is 90 degrees F and the unit will operate. Change the probe.
Error coding for “we / y” model


E1 SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more often (more than 6 times per hour).


E2 KEYBOARD STUCK ERROR: If the key button is stuck or pressed for 20 seconds or more, the unit gets stuck. If the key is stuck, it will be ignored until released. If the “mode” the key is stuck, the unit’s function will default to the cool mode.


E3 AMBIENT (INDOOR) AIR PROBE OPEN or SHORT: Control will assume ambient temperature is 90 ° F when in cool mode and 60 ° F when in heat mode. The unit will operate (see note below)


E4 EVAPORATOR TEMPERATURE PROBE OPEN or SHORT: Normal operation allowed. Change the probe.


E5 CONDENSER TEMPERATURE PROBE OPEN OR SHORT: Normal operation allowed. Change the probe.


E7 motor operation


E9 heat pump failure
The error code must be in unit test mode to enter the function. Activation error code mode: press the time on / off button (see Figures 4 and 5). The LED error code for TIMER On / Off will flash 1bps (beats per second) when mode is activated. Press the temp button / hour button will display “00”. Constant presses will scroll through all the error codes stored. Press the Temp / Hour button to see the reverse order of the error code. The temperature set point will appear when the end of the stored error code is reached. (Each error code is listed once).


Exiting fault code mode: Pressing the timer on / off button. Clearing error code: error codes become clear
By exiting the error code mode from memory.

Memory
Electronic controls have a memory to maintain all functions and settings, as installed by the user, in the event of a power failure. For example: Once power is restored to the unit, there is a delay of two seconds before the fan arrives and about three minutes before the compressor is activated, provided that the mode is set to cool. Went and the set point temperature is not found in the room.

Automatic component protection
Your unit is equipped with automatic component protection. To protect the unit’s compressor, if you turn the unit off or if power is interrupted, there is a three-minute delay. The fan will not be affected. Also, if you switch from Cool mode to Fan only mode, and return to Cool mode, there is a delay of three minutes before the compressor returns.


4. Friedrich Multi Zone Air Conditioner

Error code meaning
Indoor error


00 no error


01 indoor room themster error


02 Indoor in-piping sensor error


03 remote controller error


04 drain pump error


05 Communal error within and outside


06 indoor out-piping sensor error


07 Different Mode Operation


09 EEPROM even error check


10 Indoor BLDC Fan Lock
Outdoor error


21 DC Peak (IPM Error) – Over rated current off


22 CT2 (Max CT) 2 times – input of current off


23 DC Link Low Voltage. 2 times – DC link voltage is below 140Vdc off


24 L_P / H_P Switch – Low / High Press Switch Open Close


25 low voltage / over voltage – abnormal AC voltage input off


26 DC Compressor Status Error – Compressor Start Fall Collapse Error


27 PSC / PFC error – inverter PCB input current is over100A (peak) for 2us off


28 DC Link High Voltage – Closed


29 over current comp – inverter compressor turned off


32 D-Pipe High (INV) – Off Off


40 CT sensor (short/open) – CT circuit malfunction


41 INV. D-Pipe Threshold – Open / Short Off


44 Outdoor Air Threshold – Open / Short Off


45 Cond. Pipe Th fault – Open / Short Off


46 suction pipe fault – short/open off


51 Capacity of over 5times – over combination off


52 Signal error (DSP board <-> main board) – Communication poor shutdown


53 signal error (indoor <-> outdoor) – communication poor shutdown
Check error 60 Error – Check even missmatching


61 Cond. Pipe Th High – Cond. Temporary. Drunk


62 Heat Sink Th High-Heat Temp. Drunk


65 Heat Sink Threshold – Open / Short Off


67 Outdoor BLDC Fan Lock – Outdoor Fan Is Not Running Off


73 PFC Fault Error (S / W) – Overall Outdoor Unit PFC


5. Friedrich Room/Window Air Conditioner

Fault code resolution


CH01 Indoor Air Sensor Error. Indoor air sensor open or small.


CH09 checksum error. EEPROM read date error.


CH34 high pressure error. As high pressure, compile more than 10 bars in 1 hour.


Frederich air conditioner heat pump manual pdf
Frederich PTAC Installation and Operation Manual PDF
Frederich Portable AC Manual PDF

all ac error codes Rheem AC Error Codes

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