Check wiring. You should watch for any codes that indicate high pressure switches or FP sensors. The general alarm is initiated when the control goes into a manual lockout mode for either high pressure or low pressure. Stan and Chris DiStefano – highway construction general contractor. to 49°C]) found in geothermal systems. Also see high head pressure remedy. This scale can eventually cause the loops to develop clogging and high water pressure. The coaxes are designed for low pressure drop and low flow rates. High-pressure control open/Low-pressure control open; Miswiring of communications; REMEDY: Check for correct voltage at line voltage connections in condensing unit. This LED is shared by both the unit Low Pressure Switch and the CA. : 4 April, 2014 2 Geothermal Heat Pump Systems Troubleshooting ClimateMaster Tranquility® Digital Packaged Heat Pumps is quite straightforward. geothermal systems. Designs for all applications, residential and commercial. he said could be a faulty Low pressure switch and to keep an eye on it and to call if it locks out on Low pressure again. A professional HVAC technician can conduct additional maintenance activities on the system. ... geothermal heat pumps in Minnesota for over fifteen years. The geothermal ground loop needs to be reflushed if air is present. Low Pressure Switch Desuperheater Pump High Pressure Switch Hydronic Pump Relay . 1 TABLE OF CONTENTS ... A. Lockout Lights XI. Recently it has been tripping a low temperature lockout (FP1) sensor. does this indicate i need a new board or does this happen if it is really low pressure meaning a need a charge. Failure to heat is probably the first sign that something is wrong, but a complete lack of heat suggests a couple of simple reasons that you can fix in a few minutes. Technicians will use an acid-flush to clean out the loops. The coaxes are designed for low pressure drop and low flow rates. A split systems allows the owner to retro-fit when converting to a WSHP system. Standard heat pump problems: Keep in mind that for all its advantages, a geothermal system is still a heat pump similar in many ways to an air-source heat pump and can suffer from the same types of repair problems. His low operating costs are reflected in how much energy the geothermal systems save. A flow center is a device that produces system flow and facilitates the removal of air and debris (through built in flush/purge ports) 1.The terms “pressurized” and “non-pressurized” indicate whether static pressure is held in the piping … System Pressure Trip - Discharge or vapor pressure out of limits or compressor overloaded: 1 Check high head pressure or discharge line sensor. Water-to-Refrigerant Heat Exchanger Coil Large oversized coaxial refrigerant-to-water heat exchangers provide unparalleled efficiency. After completing the checklist, if your geothermal system is still not working properly, call Scott-Lee Heating Company at (314) 200 … Although many geothermal heat pump problems have simple solutions, all require immediate attention to prevent any permanent damage. The pump should quiet down after repressurizing, *NOTE: Low loop pressure may be the result of pipe expansion do not immediately assume you have a leak in the loop! 2 Different Techs have been 3 times but can't isolate the problem. Also an update on low pressure lockout condition: Tech came out and after checking subcool with gauges determined everything seemed fine. Reset. Compressor A, which is Stage 1, keeps locking out with a High Pressure Fault. Troubleshooting Guide - Tranquility® Digital (DXM2) Packaged Units Rev. I changed the unit to cooling mode and ran it for around 10 minutes with no problems and then switched it back to heating mode and I did not have a low pressure lockout. • FOUR BLINKS 2nd Stage low pressure lockout • FIVE BLINKS Freeze Protection lockout •SIX BLINKS Condensate overflow lockout • INTELLIGENT RESET - If a fault condition is initiated the 5 minute delay on break time period is initiated and the unit will restart after this delay expires. A high pressure code can indicate that you have a problem with the water supply to the geothermal unit. This geothermal heat pump provides heated water and chilled water as well as optional domestic water heating capability. At this point the tube containing the Freon moves through the region you want to cool, e.g. There isn't much point in having a heat pump which doesn't produce heat, and this is a problem that you need to deal with right away. This lockout condition means that the unit on the electrical box cover panel of the GeoSource 2000 has shut itself down on a low or high-pressure switch to heat pump. Features include: waterless flow detection, adjustable differential pressure range, and durable outer shell. Flow Proving Switch (Differential Pressure) shuts down the WSHP before unit can go into hard lockout faults due to water flow issues (ie. In cool mode with outdoor temp 72F low side around 125 PSI and High side about 280PSI. Check control board diagnostic codes. ft. building 4 years ago. We use cookies to give you the best possible experience on our website. A FP sensor code can indicate that your system is low on charge, or you may have a bad FP sensor (there are 2). Most problems relate to water fl ow. We have a 15 year old Climatemaster Horizontal Ground Loop Geothermal system that is having problems. Either there isn’t enough water fl ow or the entering water temperature is improperly After reseting, the flowmeter indicated flow between 9 and 11.5 gpm, which did not cause an faults! Furnace Lockout Reset Procedure. However, this drops the temperature drastically . If the pressure is sufficient, make sure the loop pumps are operating. DIGITAL Geothermal Heat Pumps TE/TZ/TES/TEP 97B0601N01 Rev. — High & low pressure switches — Lockout circuit — Unit protection module (UPM) standard in -CSC,-CSN models — Unit mounted controller (UMC) standard on -USC,-USN models Standard Warranty — 10 Year All Parts Limited Warranty — 10 Year Labor Limited Warranty An internal 24-volt, 55 VA transformer is protect itself, and will not come back on until power has provided to operate all control features of the heat pump. "When the Comfort Alert senses a fault that the Premier2 board will act upon (lockout), the Envision Low Press/Comp LED will flash. You can see both their 12,000 sq. Water to Refrigerant Coaxial Heat Exchanger Coil Large oversized coaxial refrigerant to water heat ex-changers provide unparalleled efficiency. I let the unit sit overnight last night and when I turned it on again this morning I still had a low pressure lockout after a minute or so of run time. At this low pressure and room temperature, the Freon will evaporate and become a gas. Keep in mind that whenever the furnace control board shuts unit down, gas shuts off immediately, inducer continues running for 15 sec, and if blower is running it remains running at low-heat speed or reduces to low-heat speed for selected off delay. Low pressure fault in memory Flashing Code 3 ----- Cycling Code 3 Low temp ... • Check and correct any lockout condition present. After the heat pump has run for five or 10 minutes, check the water pressure by inserting a water pressure gauge into the PT port and recording the water pressure in and the water pressure out. Refrig-erant and coaxial heat If I power down at the breaker box, upon restart (after lockout time) it does it again the moment the startup signal arrives. 5 If low pressure switch is present, see Flash Code 1 information. Though lockout mode errors and resets do vary from manufacturer to manufacturer, most use a simple reset procedure that involves turning power off to the furnace for thirty seconds or longer and turning it back. The cold winter climate has driven the design of If the pump is making noise, this is another sign of low pressure or air in the system. Plus the non pressurized flow centers are usually placed before the circulator pump and the heat pump, thus any air in the loop would have been purged out before it hits the pump and the heat pump, … ft. home that we designed the geo- thermal system in 2003, and their offices in the 9,000 sq. 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