{"id":918,"date":"2025-05-10T03:19:49","date_gmt":"2025-05-10T07:19:49","guid":{"rendered":"http:\/\/www.jckhvac.com\/?p=918"},"modified":"2025-07-10T03:05:01","modified_gmt":"2025-07-10T07:05:01","slug":"friedrich-air-conditioner-error-codes","status":"publish","type":"post","link":"http:\/\/www.jckhvac.com\/zh\/friedrich-air-conditioner-error-codes\/","title":{"rendered":"Friedrich Air Conditioner Error Codes"},"content":{"rendered":"
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\u6696\u901a\u7a7a\u8c03\u9519\u8bef\u4ee3\u7801<\/mark><\/a><\/p>\n\n\n\n

\u6587\u7ae0\u91cc\u6709\u4ec0\u4e48\u5185\u5bb9\uff1f<\/p>\n\n\n\n

Friedrich air conditioner error code list
Friedrich portable air conditioner error code list
Friedrich window air conditioner error code list
Friedrich all-in-one air conditioner error code list
Friedrich heat pump air conditioner error code list
Friedrich multi-zone air conditioner error code list<\/p>\n<\/div><\/div>\n\n\n\n

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If you’re having trouble with your Friedrich AC, start by checking the error codes to troubleshoot the issue. Troubleshooting error codes often requires the expertise of a licensed technician, but there are a few error codes you can easily fix at home. When you’ve encountered a problem with your Friedrich air conditioner, check out our troubleshooting guide and error code list to help you solve the issue at home!<\/p>\n\n\n\n

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List of Friedrich AC Error Codes<\/strong><\/h2>\n\n\n\n

Friedrich Portable Error Codes<\/strong><\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>\u539f\u56e0<\/th>Possible Cause<\/th>Solution<\/th><\/tr><\/thead>
E1<\/td>Electrical sensor is short on both temperature and PCB. Refrigeration system error code.<\/td>There may be a broken or short circuit on the ambient temperature sensor.<\/td>Check if this is a sensor problem. If not, contact the technician to replace the PCB.<\/td><\/tr>
E2<\/td>Lack of power of temperature sensor copper tubes and PCB wires. Defective sensor error code.<\/td>There may be a broken or short circuit on the brass temperature sensor (applicable only to the COOL \/ heat unit).<\/td>Check if this is a sensor problem. If not, contact a technician to inspect the unit.<\/td><\/tr>
E4<\/td>Poor connection to the water tank.<\/td>The signal indicates incomplete or poor contact to the unit’s water tank.<\/td>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.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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Friedrich Window AC Error Code List<\/strong><\/h3>\n\n\n\n
AC Error Code<\/th>\u539f\u56e0<\/th><\/tr><\/thead>
CH01<\/td>Discharge Air Temperature Sensor Error. Indoor air sensor open or small.<\/td><\/tr>
CH09<\/td>EEPROM read date error.<\/td><\/tr>
CH34<\/td>High pressure error. At high pressure, compile more than 10 bars in 1 hour.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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Friedrich Packaged Terminal AC Error Code List<\/strong><\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>\u539f\u56e0<\/th><\/tr><\/thead>
E1<\/td>High pressure system protection<\/td><\/tr>
E2<\/td>Anti freezing protection<\/td><\/tr>
F0<\/td>Refrigerant defects<\/td><\/tr>
E4<\/td>High discharge temperature protection of compressor<\/td><\/tr>
E5<\/td>Overcurrent Protection<\/td><\/tr>
E6<\/td>Communication malfunction<\/td><\/tr>
E8<\/td>High Temperature Resistant Protection<\/td><\/tr>
EE<\/td>EEPROM Malfunction<\/td><\/tr>
EU<\/td>Frequency reduction due to high temperature of module<\/td><\/tr>
C5<\/td>\u8df3\u7ebf\u5e3d\u6545\u969c\u4fdd\u62a4<\/td><\/tr>
DC<\/td>Bus bar PL voltage is too low<\/td><\/tr>
F1<\/td>Indoor ambient temperature sensor is open \/ small circuit<\/td><\/tr>
F2<\/td>Indoor evaporator temperature sensor is open \/ small circulated<\/td><\/tr>
F3<\/td>Outdoor ambient temperature sensor is open \/ small circulated<\/td><\/tr>
F4<\/td>Outdoor condenser temperature sensor is open \/ small circulated<\/td><\/tr>
F5<\/td>Outdoor discharge temperature sensor is open \/ small circulated<\/td><\/tr>
F6<\/td>Decrease frequency due to overload<\/td><\/tr>
F8<\/td>Frequency decrease due to overcrack<\/td><\/tr>
F9<\/td>Reduction in frequency of due to high air discharge<\/td><\/tr>
FH<\/td>Decrease frequency due to anti freezing<\/td><\/tr>
H0<\/td>Frequency of decreases due to high temperature resistor during heating operation<\/td><\/tr>
H1<\/td>\u9664\u971c<\/td><\/tr>
H2<\/td>Static surrender protection<\/td><\/tr>
H3<\/td>Overload protection for compressor<\/td><\/tr>
H4<\/td>System is abnormal<\/td><\/tr>
H5<\/td>IPM Security<\/td><\/tr>
H6<\/td>Internal motor (fan motor) does not operate<\/td><\/tr>
H7<\/td>Desynchronizing of Compressor<\/td><\/tr>
HC<\/td>PFC Security<\/td><\/tr>
L3<\/td>Outdoor DC Fan Motor Malfunction<\/td><\/tr>
L9<\/td>Power Protection<\/td><\/tr>
LC<\/td>Failure startup<\/td><\/tr>
LP<\/td>Does not match indoor unit and outdoor unit<\/td><\/tr>
P0<\/td>Compressor minimum frequency in test state<\/td><\/tr>
P1<\/td>Compressor rated frequency at test stage<\/td><\/tr>
P2<\/td>Compressor maximum frequency in test state<\/td><\/tr>
P3<\/td>Compressor intermediate frequency in test state<\/td><\/tr>
P5<\/td>Overload protection of phase current for compressor<\/td><\/tr>
P7<\/td>Module temperature sensor circuit malfunction<\/td><\/tr>
P8<\/td>Module High Temperature Protection<\/td><\/tr>
PH<\/td>Voltage too high for DC bus bar<\/td><\/tr>
U1<\/td>Malfunction of phase current detection circuit for compressor<\/td><\/tr>
U3<\/td>Malfunction of voltage dropping for DC bus bar<\/td><\/tr>
U5<\/td>Malfunction current detection of complete units<\/td><\/tr>
U7<\/td>Four-way valve is abnormal<\/td><\/tr>
U9<\/td>Zero-crossing Outdoor Unit Malfunction<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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Numerical AC Error Code List<\/strong><\/h4>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>\u539f\u56e0<\/th>Solution<\/th><\/tr><\/thead>
Error Code: 02<\/td>Extremely low voltage conditions exist 198V for 230V units and 239V for 265V units<\/td>Shutdown unit<\/td><\/tr>
Error Code: 03<\/td>Return air thermistor sensor open or short circuit<\/td>Set the return air sensor = 75 \u00b0 F<\/td><\/tr>
Error Code: 04<\/td>Indoor coil temperature sensor open or short circuit<\/td>Set ID coil temp = 40 \u00b0 F<\/td><\/tr>
Error Code: 05<\/td>Outdoor coil thermistor sensor open or short circuit<\/td>Set indoor coil temp = 20 \u00b0 F.<\/td><\/tr>
Error Code: 06<\/td>Outdoor coil temperature over 175 \u00b0F<\/td>Shut down unit for 5 minutes<\/td><\/tr>
Error Code: 07<\/td>Indoor coil temperature is below 30 \u00b0 F<\/td>Shut down unit for 5 minutes. The compressor remains closed until the indoor coil thermistor reaches 45 \u00b0 F.<\/td><\/tr>
Error Code: 08<\/td>Low load conditions<\/td>Contact technician<\/td><\/tr>
Error Code: 09<\/td>High load conditions<\/td>Contact technician<\/td><\/tr>
Error Code: 10<\/td>Room Freeze Protection Trigger<\/td>Keep unit running<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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Friedrich Heat Pump Error Code List<\/strong><\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>\u539f\u56e0<\/th><\/tr><\/thead>
E1<\/td>SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more often (more than 6 times per hour).<\/td><\/tr>
E1<\/td>SHORT CYCLE SITUATION: Defined as a compressor that starts and stops more often (more than 6 times per hour).<\/td><\/tr>
E2<\/td>KEYBOARD 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<\/td><\/tr>
E2<\/td>KEYBOARD 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 unt<\/td><\/tr>
E3<\/td>AMBIENT (INDOOR) AIR PROBE OPEN or SHORT: Control will assume ambient temperature is 90 \u00b0 F when in cool mode and 60 \u00b0 F when in heat mode. The unit<\/td><\/tr>
E3<\/td>FROST PROBE OPEN: Normal operation allowed. Change the probe.<\/td><\/tr>
E4<\/td>EVAPORATOR TEMPERATURE PROBE OPEN or SHORT: Normal operation allowed. Change the probe.<\/td><\/tr>
E4<\/td>FROST PROBE SHORT: Normal operation allowed. Change the probe.<\/td><\/tr>
E5<\/td>CONDENSER TEMPERATURE PROBE OPEN OR SHORT: Normal operation allowed. Change the probe.<\/td><\/tr>
E5<\/td>INDOOR PROBE OPEN: The control assumes that the indoor ambient temperature is 90 degrees F and the unit will operate. Change the probe.<\/td><\/tr>
E6<\/td>INDOOR PROBE SHORT: The control assumes that the ambient temperature is 90 degrees F and the unit will operate. Change the probe.<\/td><\/tr>
E7<\/td>Motor operation error<\/td><\/tr>
E9<\/td>Heat pump failure<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

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Friedrich Multi Zone Air Conditioner Error Code List<\/strong><\/h3>\n\n\n\n
\u9519\u8bef\u4ee3\u7801<\/th>\u539f\u56e0<\/th><\/tr><\/thead>
00<\/td>No error<\/td><\/tr>
01<\/td>Indoor room themster error<\/td><\/tr>
02<\/td>Indoor in-piping sensor error<\/td><\/tr>
03<\/td>Remote controller error<\/td><\/tr>
04<\/td>Drain pump error<\/td><\/tr>
05<\/td>Communal error within and outside<\/td><\/tr>
06<\/td>Indoor out-piping sensor error<\/td><\/tr>
07<\/td>Different Mode Operation<\/td><\/tr>
09<\/td>EEPROM even error check<\/td><\/tr>
10<\/td>Indoor BLDC Fan Lock<\/td><\/tr>
21<\/td>DC Peak (IPM Error) \u2013 Over rated current off<\/td><\/tr>
22<\/td>CT2 (Max CT) \u2013 input of current off<\/td><\/tr>
23<\/td>DC Link Low Voltage \u2013 DC link voltage is below 140Vdc off<\/td><\/tr>
24<\/td>LP \/ HP Switch \u2013 Low \/ High Press Switch Open Close<\/td><\/tr>
25<\/td>Low voltage \/ over-voltage \u2013 abnormal AC voltage input off<\/td><\/tr>
26<\/td>DC Compressor Status Error \u2013 Compressor Start Fall Collapse Error<\/td><\/tr>
27<\/td>PSC \/ PFC error \u2013 inverter PCB input current is over100A (peak) for 2us off<\/td><\/tr>
28<\/td>DC Link High Voltage \u2013 Closed<\/td><\/tr>
29<\/td>Overcurrent error \u2013 inverter compressor turned off<\/td><\/tr>
32<\/td>D-Pipe High (INV) \u2013 Off Off<\/td><\/tr>
40<\/td>CT sensor (short\/open) \u2013 CT circuit malfunction<\/td><\/tr>
41<\/td>INV. D-Pipe threshold \u2013 Open \/ Short Off<\/td><\/tr>
44<\/td>Outdoor Air threshold \u2013 Open \/ Short Off<\/td><\/tr>
45<\/td>Condenser Pipe threshold fault \u2013 Open \/ Short Off<\/td><\/tr>
46<\/td>Suction Pipe Fault \u2013 Short\/Open Off<\/td><\/tr>
51<\/td>Overcapacity error – overloaded<\/td><\/tr>
52<\/td>Signal error between DSP board and main board<\/td><\/tr>
53<\/td>Signal error between indoor unit and outdoor unit.<\/td><\/tr>
61<\/td>Condenser Pipe threshold High<\/td><\/tr>
62<\/td>Heat Sink threshold High-Heat Temp. Drunk<\/td><\/tr>
65<\/td>Heat Sink threshold \u2013 Open \/ Short Off<\/td><\/tr>
67<\/td>Outdoor BLDC Fan Lock \u2013 Outdoor Fan Is Not Running Off<\/td><\/tr>
73<\/td>PFC Fault Error (S \/ W) \u2013 Overall Outdoor Unit PFC<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

If you’re experiencing issues with your unit, you can reach their support team online: https:\/\/www.friedrich.com\/consumer\/contact-us<\/a><\/p>\n\n\n\n

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Ameristar Furnace Error Codes<\/mark><\/a><\/p>\n\n\n\n

RunTru Furnaces Error Codes<\/mark><\/a><\/p>\n\n\n\n

Lennox Furnace Error Codes<\/mark><\/a><\/p>\n\n\n\n

Amana \u7089\u9519\u8bef\u4ee3\u7801<\/mark><\/a><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

If you’re having trouble with your Friedrich AC, start by checking the error codes to troubleshoot the issue. Troubleshooting error codes often requires the expertise of a licensed technician, but there are a few error codes you can easily fix at home. When you’ve encountered a problem with your Friedrich air conditioner, check out our troubleshooting […]<\/p>\n","protected":false},"author":1,"featured_media":1060,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-error-codes"],"yoast_head":"\nFriedrich Air Conditioner Error Codes - \u7ebd\u7ea6\u5408\u6210\u51b7\u6696\u5de5\u7a0b\u516c\u53f8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.jckhvac.com\/zh\/friedrich-air-conditioner-error-codes\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Friedrich Air Conditioner Error Codes\" \/>\n<meta property=\"og:description\" content=\"If you’re having trouble with your Friedrich AC, start by checking the error codes to troubleshoot the issue. 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Troubleshooting error codes often requires the expertise of a licensed technician, but there are a few error codes you can easily fix at home. 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