Feel free to discuss your heat pump defrost problem here. Or help us solve some of the problems presented.Click here to see the rest of the form and complete your submission.Click below to see contributions from other visitors to this page... Heat Pump Defrosts at 45 degrees and too often. I recently installed a Airtemp VT48D-36k 3.0 ton Heat pump. The outside unit defrosts at 45 dgrees and higher and does it way to often approximately … Trane heat pump shuts down at 0 degrees fahrenheit The new Trane heat pump cuts off completely at 0 degrees. The installer was told that this 15 seer model is designed to shut down because it can no longer … blows cold air too long Trans outside unit 8 years old 5 ton. When it defrosts it blows cold air for about 30 minutes House temperature drops about 5 degrees everytime it defrosts. Insulated pipe in basement drips. There is a slight drip from the insulated pipe that runs across my basement ceiling which connects the outside heat pump equipment to the inside equipment.

High temperature frequent defrosting My new Goodman heat pump defrosts even at outside temperatures of 42-46 degrees. Very Cold Vent Air (56 degrees) during Defrost Even though Heat Strips are On I have a new Trane XL-15 3.5 ton heat pump. It works fine except during defrost. When conditions are: 65 degrees inside; cold air Really cold air forcefully coming up through registers when defrost cycle is on..temperature drops 2 full degrees in house ...system says" auxillary heat … york model ef4h does not go into defrost  I have a york model e4fh heat pump in the house i just purchased durning the summer the ac stopped company came and looked at it and said a wire had came … won't go into defrost Goodman SSZ140361AF We have changed the defrost sensor and board but still won't go into to defrost How to determine if a defrost board is functional The carrier heat pump will not initiate defrost. Make: carrier heat pump no defrost cycle ice on coil Defrost cycle not working ice on coils while heat pump is running

Heater Fan Relay Problem I have an Amana SPOH6001A unit that when it is cold, the heater fan relay clicks real loud and the outdoor fan momentarily cuts out. If the temperature … Heat Pump not Defrosting in Defrost Mode I have a older unit(Heil). The unit seems to go into defrost mode but it doesn't seem to be defrosting anything. The fan shuts off and the compressor … Defrost control board turns out side fan off during cool Model Carrier 25HBC536A300 S/N 2211E06528 While the heat pump is in cool cycle (running well) the indoor fan turns off and the compressor keeps running … Mitsubishi Heat Pump Defrost is On Too Often In winter conditions the defrost cycle operates 35 minutes apart...while the coils outside were clean and no ice or frost... the model of my mitsubishi … whirlpool model WHP4430AAE When the outside temperature drops to less than -6 degrees C, the heat pump cycles more then 7 times and the furnace cycles on and off several times. will not defrost new defrost board, refrigerant is fine, ice build up and will not defrost its a Carrier heat pump Model #38QN030330

Defrost Icing Problems - American Standard Heat Pump This unit is an American Standard heat pump, 2.5 ton 13 seer, R-22. air handling unit manufacturers in gurgaonIt ices up every time it is 42 degrees or colder and raining outside. samsung split unit ac in nigeria will not defrost  Not rated yetYork model YHJD30S41S2Ata 1500 hw air handling unit will not defrost when outside temps. get near 32 degrees in side air continues to cycle from blowing warm air to cold air and … Defrost Cycle Too Short Not rated yetLast winter my York heat pump was not going into defrost mode. I was able to force defrost by jumping the pins on the control board. Defrosting took quite … Unit won't heat or cool--they want to replace defrost panel Not rated yetLennox.

Intermittant problem with the air conditioning not working correctly. It blows cold air for awhile, eventually it just blows coolish air, the … defrosting cool mode Not rated yetRheem RQNC 048 going into defrost mode while in AC mode Defrost turns on when in the cooling mode Not rated yetI have a 3-ton Bryant 664A, and the system seems to reverse when it is supposed to be cooling. It will start out cooling well (intake is about 86 degrees, … Goodman heat pump blows ice cold air during defrost cycle Not rated yetGoodman Model PHKJ036-1F Hi, i have a 7 year old 2.5 ton Goodman residential heat pump that is blowing ice cold air during the defrost cycle. defrosts too frequently Not rated yetI want to change my defrost interval time on a Lenox HP 26-030. How do I do that? heat pump not working Not rated yetIn heating mode the condenser comes on and runs a few minutes then shuts off it is a whirlpool MN:W2H330A-1ACompressors from Bristol Compressors, LLC are completely interchangeable with other manufacturers.

However, electrical specifications, tubing confugurations and wiring connections may vary. Before installing and starting a compressor from Bristol Compressors, you must review the wiring diagrams and check for correct electrical components. A,B & J Series - 200022 G Series - 200023Common 60hz voltages for single-phase motors are 115 volt, 230 volt, Common 60hz voltages for three-phase motors are 230 volt, 460 volt andTwo hundred volt and 575 volt motors are sometimesIn prior NEMA standards these voltages were listed as 208 or 220/440 or 550 volts. Motors with these voltages on the nameplate can safely be replaced by motors having the current standard marking of 200 or 208-230/460 or 575 volts, respectively. Motors rated 115/208-230 volt and 208-230/460 volt, in most cases will operate satisfactorily at 208 volts, but the torque will be 20% - 25%Operating below 208 volts may require a 208 volt (or 200 volt) motor or the use of the next higher horsepower, standard voltage

The turning effort or force applied to a shaft, usually expressed in inch-pounds or inch-ounces for fractional or sub-fractional HP motors. produced by a motor as it begins to turn from standstill and accelerate (sometimes called locked rotor torque). Full Load Torque: The force produced by a motor running at rated full-load speed at rated horsepower. maximum torque a motor will develop under increasing load conditions without an abrupt drop in speed and power (sometimes called pull-out Pull-Up Torque: The minimum torque delivered by a motor between zero and the rated RPM, equal to the maximum load a motor can accelerate to rated RPM. NEMA Locked Rotor: For three phase motors, 60Hz & 50Hz at(Design B torques in black; Design C torques in blue) Automatic Reset : After the motor cools, this line-interrupting protector automatically restores power. It should not be used where unexpected restarting would be hazardous.

Manual Reset : This line-interrupting protector has an external button that must be pushed to restore power to the motor. unexpected restarting would be hazardous, as on saws, conveyors, compressors and other machinery. Resistance Temperature Detectors : Precision-calibrated resistors are mounted in the motor and are used in conjunction with an instrument supplied by the customer to detect high temperatures. Reliable, easy-to-use units are available today for controlling the speed of AC and DC industrial motors. Both types use solid state devicesDC drives are the more straightforward, commonly using silicon controlled rectifiers (SCR's) to convert AC line voltage to controlled DC voltage, which is then applied to the armature of a directThe more voltage applied to the armature, the faster itDC drives of this type represent an excellent value for motors up to approximately 3 HP, allowing 60:1 speed regulation and full torque

even at reduced speeds. The most common type of AC drive today begins much the same way as a DC drive does - by rectifying "pulsing" AC line voltage to pulse-free DC voltage. However, instead of outputting the DC voltage, the AC drive must re-introduce pulses into the output in order to meet the needs of an AC motor. This is done using solid-state switches, such as insulated gate bipolar transistors (IGBT's) or gate turn off SCR's (GTO's). The result is a control technique known as pulse width modulation (PWM), perhaps the most highly regarded type of AC drive for many industrial applications. speed varies with the frequency of the pulses introduced into the output Pulse width modulated AC drives offer an extremely wide speed range, a host of control functions including programmable acceleration and deceleration ramps and several preset speeds, excellent energy efficiency and, in many cases, speed and torque precision equal to or closely