To Next PageTo Next PageHow to troubleshoot ClimateMaster TCH072 main power problems?
To troubleshoot main power issues with your ClimateMaster Heat Pump, check the line voltage circuit breaker and disconnect. Verify line voltage between L1 and L2 on the contactor. Also, check for 24VAC between R and C on the CXM/DXM, and inspect the primary/secondary voltage on the transformer.
What causes high pressure fault (HP Fault Code 2) in a ClimateMaster TCH072 Heat Pump?
A high-pressure fault in your ClimateMaster Heat Pump can be caused by reduced or no water flow in cooling, so check pump or valve operation/setting and adjust water flow to the proper rate. If the water temperature is out of range in cooling, bring it within design parameters. Reduced or no air flow in heating can also cause this, so check for a dirty air filter and clean or replace it. Check fan motor operation and airflow restrictions. Also, check for a dirty air coil, too high of external static (check static vs blower table), and air temperature out of range in heating (bring return air temp within design parameters). Check superheat/subcooling vs typical operating condition table. Finally, check switch continuity and operation, and replace if necessary.
Why does my ClimateMaster Heat Pump show fault code 6, Condensate?
The Condensate Fault Code 6 on your ClimateMaster Heat Pump indicates a blocked drain (check for blockage and clean the drain), an improper trap (check trap dimensions and location ahead of vent), or poor drainage (check for piping slope away from unit). Check slope of unit toward outlet. Check vent location for poor venting. Check for moisture shorting to air coil. Replace air filter if plugged. Find and eliminate restriction. Increase return duct and/or grille size if there is Restricted Return Air Flow.
What does fault code 4 (LT1 Water coil low temperature limit) mean on my ClimateMaster TCH072 Heat Pump?
Fault Code 4 on your ClimateMaster Heat Pump indicates a low water coil temperature limit. This can be due to reduced or no water flow in heating, so check pump operation or water valve operation/setting. Look for a plugged strainer or filter and clean or replace it. Ensure proper water flow and adjust to the correct rate. Check antifreeze density with a hydrometer if the antifreeze level is inadequate. If the temperature limit setting is improper (30°F vs 10°F [-1°C vs -2°C]), clip JW3 jumper for antifreeze (10°F [-12°C]) use. Bring water temperature within design parameters if it is out of range. Check temperature and impedance correlation per chart.
What does fault code 5 (LT2 Air coil low temperature limit) mean on my ClimateMaster Heat Pump?
Fault Code 5 on your ClimateMaster Heat Pump signals a low air coil temperature limit. This could be due to reduced or no air flow in cooling, so check for a dirty air filter and clean or replace it. Check fan motor operation and airflow restrictions. If the external static is too high, check the static vs blower table. If the air temperature is out of range, ensure the entering air temperature is within design parameters. If the temperature limit setting is improper (30°F vs 10°F [-1°C vs -12°C]), normal airside applications will require 30°F [-1°C] only. Check temperature and impedance correlation per chart.
What causes fault code 3 (Low Pressure / Loss of Charge) on a ClimateMaster TCH072?
Fault Code 3 on your ClimateMaster Heat Pump indicates low pressure or loss of charge. This can be caused by insufficient charge, so check for refrigerant leaks. Also, check charge and start-up water flow.
What to do if my ClimateMaster Heat Pump only runs the fan?
If your ClimateMaster Heat Pump only runs the fan, ensure the thermostat is set for heating or cooling. Check for lockout codes and reset power. Examine the compressor overload and replace it if necessary. Also, inspect the thermostat wiring at the heat pump, and try jumpering Y and R for compressor operation in test mode.
What to do if my ClimateMaster TCH072 unit short cycles?
If your ClimateMaster Heat Pump is short cycling, check and clean the air filter. Reset the power or wait 20 minutes to exit 'test mode'. Also, the unit may be oversized for the space, so check the sizing for the actual load. Inspect the compressor overload and replace if necessary.
What to do if my ClimateMaster TCH072 Heat Pump only compressor runs?
If only the compressor runs on your ClimateMaster Heat Pump, check the G wiring at the heat pump and jumper G and R for fan operation. Jumper G and R for fan operation, and check for line voltage across BR contacts. Check the fan power enable relay operation (if present). Check for line voltage at the motor and inspect the capacitor. Also, check the thermostat wiring at the heat pump, and try jumpering Y and R for compressor operation in test mode. Set for cooling demand and check 24VAC on RV coil and at CXM/DXM board. If the RV is stuck, run high pressure up by reducing water flow and while operating engage and disengage RV coil voltage to push valve. Check for ‘O’ RV setup not ‘B’. Check O wiring at heat pump. Jumper O and R for RV coil ‘click’.
What does code 8 (Unit Performance Sentinel) mean on my ClimateMaster Heat Pump?
Code 8 (Unit Performance Sentinel) on your ClimateMaster Heat Pump indicates an issue. In heating mode (LT2>125°F [52°C]), check for poor air flow or an overcharged unit. In cooling mode (LT1>125°F [52°C] OR LT2< 40ºF [4ºC]), check for poor water flow or air flow.
General| Brand | ClimateMaster |
|---|---|
| Model | TCH072 |
| Category | Heat Pump |
| Language | English |
Identifies the unit series and refrigerant type.
Specifies horizontal or vertical unit orientation.
Indicates the cooling/heating capacity of the unit.
Crucial warnings, cautions, and notices for safe installation and operation.
Details on attaching hanger brackets and suspending the unit.
Illustrates the steps for converting TCV units to straight discharge.
Specific instruction for relocating the motor mount assembly during conversion.
Instruction to remove blower mount bolts as part of the conversion.
Instruction for rotating and reattaching the blower assembly.
Instruction for final panel replacement and reversal of steps.
Illustrates the steps for converting TCV300 units to straight discharge.
Instruction to remove the 3 blower sub-assembly.
Instruction for reassembling panels and reversing steps.
Instruction for rotating the blower assembly and moving the sheave.
Instruction to attach the middle divider.
Instruction to reattach the blower assembly and tension the belt.
Instruction for rotating the blower assembly.
Illustrates the control box conversion for TCV models.
Steps for converting water connections, likely related to discharge conversion.
Description of typical open loop piping for ground water systems.
Guidelines for water quality requirements and scaling potential.
Table detailing water quality requirements for coaxial heat exchangers.
Table providing electrical specifications for units.
Use only copper conductors for field installed electrical wiring.
Description of low voltage wiring requirements.
Detailed information on CXM control functions and operation.
Setting the low temperature limit for the water coil.
Setting the low temperature limit for the air coil.
Table summarizing accessory DIP switch configurations.
Overview of safety features protecting the unit from damage.
Procedure for adjusting the variable sheave on the fan motor.
Importance of proper belt tension for motor and bearing life.
Step-by-step instructions for tensioning belts.
Steps for measuring belt span and deflection force.
Table detailing blower sheave and belt configurations for TCH/V models.
Table detailing operating limits for cooling and heating.
A checklist of critical items before powering the system.
Table detailing commissioning limits.
The most important step for proper start-up and efficient operation.
Caution about high voltage presence in the electrical panel.
Verify water control valves are open to prevent freezing.
Table showing pressure drop data for TC coax heat exchangers.
Table detailing operating pressures and temperatures.
Table detailing operating pressures and temperatures.
Table showing temperature changes for different water flows.
Importance of clean filters for performance and maintenance schedule.
Identification of specific performance issues.
Listing potential reasons for performance problems.
Recommended actions to resolve performance issues.
Covers the terms and limitations of the express warranty.
Outlines the scope and duration of the warranty.
