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Durham Region Air Conditioning Repair, Service and Installation

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Standard and Remote Applications with LED M70 Control Board and R-410A.


Amana PTAC Air Conditioner Error Codes

CODE: FP.
RESULT: Freeze Protection Engaged. The room temperature measured by the wireless remote thermostat or indoor ambient thermistor active sensor falls below 40°F.
FIX: No Action required. This setting will disengage when the room temperature rises above 43°F.

CODE: Fd.
RESULT: Front Desk switch is closed. All outputs are switched off.
FIX: Open front desk switch to allow occupant unit operation.

CODE: Eo.
RESULT: Un-Configured Service Board - All operation held awaiting configuration.
FIX: Enter Configuration Menu and set "C3" to "C" for coolers with electric heat or "H" for heat pumps.

CODE: EH.
RESULT: Emergency Hydronic Engaged. The EHH switch is closed. Compressor is switched off.
FIX: Open front emergency hydronic switch to allow occupant unit operation.

CODE: LS.
RESULT: Load Shedding Engaged. The LS switch is closed. Compressor and Electric heat is switched off.
FIX: Open load shedding switch to allow occupant unit operation.

CODE: On.
RESULT: Control is configured to respond to a wired thermostat.
FIX: No action if a wired thermostat is being used.Otherwise, see Configuration Settings.

CODE: oP.
RESULT: Open Door Lockout (DS1 & DS2 open; wireless).
FIX: Close Room Door. Unit will not condition space with door open.

CODE: nP.
RESULT: Window Switch Lockout - (LS & INN open).
FIX: Close Room Door or Window. Unit will not condition space with door or window open.

CODE: HP.
RESULT: Heat Sentinel - (WIAT > u3).
FIX: No action required. This setting will disengage when the room temperature falls.

CODE: Ur.
RESULT: Un-Rented Status (EHH & INN or wireless).
FIX: Front Desk needs to set to Rented mode (if applicable).

CODE: F1.
RESULT: Indoor Ambient Thermistor reads outside the range -20°F to 200°F & the wireless thermostat is not communicating to the unit control or Indoor Ambient Thermistor (IAT) without a wireless remote thermostat reads outside the range -20°F to 200°F.
FIX: Replace black Indoor Ambient Thermistor or Wireless Remote Thermostat.

CODE: F2.
RESULT: Wireless Remote Thermostat failure.
FIX: Replace Wireless Thermostat.

CODE: F3.
RESULT: Indoor Ambient Thermistor reads outside the range -20°F to 200°F.
FIX: Replace black Indoor Ambient Thermistor.

CODE: F4.
RESULT: Indoor Coil Thermistor either above or below operating tolerances.
FIX: Replace Red Indoor Coil Thermistor.

CODE: F5.
RESULT: Wireless Thermostat failure.
FIX: Attempt to rebind Wireless Thermostat or Replace Wireless Thermostat.

CODE: F6.
RESULT: Indoor Discharge Thermistor either above or below operating tolerances.
FIX: Replace Yellow Indoor Discharge Thermistor.

CODE: Fb.
RESULT: Low Remote Battery Warning.
FIX: Replace Batteries in Wireless Devices.

CODE: H1.
RESULT: High Voltage Protection engaged. Power supply voltage is to high.
FIX: Check for incoming power at correct voltage.

CODE: br.
RESULT: Brown Out Protection engaged. Power was lost or voltage is low.
FIX: Check for incoming power at correct voltage.

CODE: L6.
RESULT: Discharge Air Too Hot.
FIX: Clean Filter or Remove Air Blockage.

CODE: LC.
RESULT: Outdoor Coil Thermistor temperature high.
FIX: Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning.

CODE: C2.
RESULT: Indoor Air Recirculation. Large delta between thermostat and return.
FIX: Clean Filter or Remove Air Blockage or Close Vent Door or Improve indoor to outdoor seal.

CODE: C5.
RESULT: Outdoor Coil temperature too high for outdoor ambient temperature.
FIX: Check for Blocked Outdoor Air or Clean Coil.

CODE: C1.
RESULT: Indoor Coil is freezing up.
FIX: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C3.
RESULT: Indoor Coil is freezing up.
FIX: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C4.
RESULT: Indoor Coil froze up.
FIX: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C6.
RESULT: Poor Unit Performance.
FIX: Check for blower motor, compressor, or electric heat operation.

CODE: C7.
RESULT: Indoor Freezing Lockout (ICT - IAT > 20) +10 Min.
FIX: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.


See What Our Customers Are Saying:

by Bill P. Whitby on Twintech Heating and Cooling

Thank you for your attention to detail regarding my purchase of a new air conditioner. Twintech arrived at the appointed time and were totally professional on the installation process completing the job quickly. PS thanks for the assistance applying for the government rebate

by Sam C, Pickering on Twintech Heating and Cooling

Dave and the guys from Twintech did a great job of installing my AC. They came on time did a nice neat job and cleaned up after themselves! Do not waste your time call Twintech first.

by Mary W, Whitby on Twintech Heating and Cooling

My AC unit was not working at all and our furnace that was still working but not giving us any trouble was over 15 years old. So I had 3 heating companies come out to give us a quote on replacing both the AC and the furnace at the same time. Two companies right away recommended that I replace both units simply because they were old. Dave from twintech however suggested that we save some money and replace the AC only because it seemed to him that the furnace was still in great shape and was running fine. He told us that he would have his technicians inspect the furnace thoroughly when they had it apart to install the AC. My husband was at home when the furnace was apart and was very impressed when the tech took him downstairs to personally show him that the furnace was in excellent working condition. He also cleaned the furnace at no extra charge. So now I have an honest heating and AC company that I can highly recommend to other home owners. Great job Thank You!

by Scott B, Whitby on Twintech Heating and Cooling

I had made the decision to replace my furnace and AC earlier this year. After meeting with several HVAC contractors I decided to go with Dave and his company. Dave was on time, polite, friendly and very professional. He took the time to answer all my questions and to explain the scope of work that would be required to do the job. The technicians arrived on time did a professional installation and completed the job on schedule. They respected my home by putting down vinyl runners to protect my floors and did a very thorough clean up. I’m very pleased with my decision to go with Dave and his team. I would highly recommend them to anyone who is considering upgrading their furnace and air conditioner.

by Mel F, Oshawa on Twintech Heating and Cooling

I have no problem in recommending Dave and the TWINTECH team to any home owner who is looking for quality heating and AC products and expert service.

by Eric Y, Greenbank on Twintech Heating and Cooling

Dave was great in helping me get the proper units for my property, as well as getting them installed. The installers arrived when they said they would, and completed the project on time, and professionally. If I needed another furnace, I would use Dave again.

by Ed B., Whitby on Twintech Heating and Cooling

I have known Greg and Grant Dainty for many years and have used their company for my house and business. I recommended them also for my parents and sister and they all have been very satisfied with the quality of work for a reasonable price. I just recently had them install a new HVAC system in an older house and was very pleased with their work. Craig in Pickering. After meeting with various heating and air conditioning contractors I was referred to Twin Tech Heating and Cooling through a family member. Greg and Grant arrived at my home and provided me with an estimate and a plan as to how they were going to remove and replace my furnace and air conditioner. On the day of install Greg and Grant arrived at my home on time and were very professional and extremely courteous as to any questions or concerns that I had. The removal and install was truly professional and the attention to detail was exactly what I was looking for. I’ve seen many installs from other contractors and I couldn’t be any happier to have had such a clean looking install. The sheet metal work, ducting and venting all look fantastic. Upon completion Greg and Grant left me feeling extremely happy and very fortunate of a job well done. Thanks again Twin Tech!!

by Floreene in Whitby on Twintech Heating and Cooling

My old furnace had finally broken down for the last time when contacted twintech to have a new furnace installed…They were prompt, knowledgeable and very reasonably priced. They did such a great job i tell all my friends and family about this company.

by Damien McIsaac. Ajax on Twintech Heating and Cooling

To whom it may concern, I recently had TwinTech (Greg and Grant Dainty) replace my furnace and service both my gas fireplaces and air conditioning unit. They were professional, courteous and very fair in their pricing. I would gladly recommend TwinTech to anyone needing work done. I can be contacted at 905-626-XXXX.

by Blair N. - Toronto on Twintech Heating and Cooling

My Fiancé and I have relied on Twintech Heating and Cooling now for the better part of the last 10 years. In that time, Greg has installed a furnace, an air conditioner, and a heat-pump at our residence in Toronto. In each instance Greg and his team were a pleasure to deal with. They were courteous and professional throughout the whole process and the quality of their work is first rate. Our experiences have always been extremely positive and we have referred his services numerous times to our friends and family. Without hesitation, I would recommend Greg and TwinTech Heating and Cooling to anyone looking to service or replace their existing heat/AC equipment