To Next PageTo Next PageHow to troubleshoot ClimateMaster Tranquility TCH Heat Pump 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 Tranquility TCH?
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 Tranquility TCH?
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 Tranquility TCH 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 Heat Pump?
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 Tranquility TCH Heat Pump 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 Tranquility TCH 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 Tranquility TCH 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| Type | Water Source Heat Pump |
|---|---|
| Refrigerant | R-410A |
| Compressor Type | Scroll |
| Stages | Single or Two-Stage |
| Model | TCH Series |
| Cooling Capacity | 6, 000 - 72, 000 BTU/h (0.5 to 6 tons, nominal) |
| Heating Capacity | 9, 000 to 66, 000 BTU/h |
| Voltage | 460V |
| Configuration | Horizontal or Vertical |
| Dimensions | Varies by model |
| Unit Weight | Varies by model |
Explains DANGER, WARNING, CAUTION, NOTICE definitions and refrigerant handling.
Provides dimensions for TCV300 with WSE.
Discusses optimal indoor placement and service access for horizontal units.
Details the factory-attached hanger brackets and field installation process.
Explains proper pitching and trap installation for condensate drainage.
Covers guidelines for sizing, airflow, and insulation of ductwork.
Provides step-by-step instructions for converting air discharge from side to back.
Outlines reversing the side-to-back conversion steps.
Discusses optimal indoor placement and service access for vertical units.
Provides application guidelines for TC units and ductwork.
Illustrates steps for converting TCV072-120 and TCV160-240 from top to straight discharge.
Illustrates steps for converting TCV300 from top to straight discharge.
Explains control box relocation and preparation steps for conversion.
Details steps for converting water connections to the opposite side.
Explains condensate line setup, trap, vent, and pitching for TCV units.
Covers guidelines for supply/return piping, valves, and hose kits.
Discusses commercial systems, air elimination, and piping material recommendations.
Explains system loop temperatures and cooling tower requirements.
Covers locating underground utilities and marking piping for new construction.
Details earth loop piping material, fittings, and flow rates.
Explains antifreeze requirements, types, and concentration calculations.
Describes open loop piping, shut-off valves, and material compatibility.
Details thermostat connection to CXM/DXM boards and low voltage wiring.
Provides guidelines for thermostat location and mounting.
Explains Test mode and Retry mode for DXM control diagnostics.
Details jumper settings for temperature limits and alarm relay.
Explains DIP switch configurations for DXM operation.
Covers UPS disable, compressor staging, and thermostat type selections.
Details accessory relay personality and fan mode selections.
Explains safety features protecting compressor and components from improper operation.
Details how LEDs on CXM/DXM boards indicate status and faults.
Outlines initial start-up sequence including delays and protection.
Details adjusting the variable sheave drive for airflow and ESP.
Provides step-by-step instructions for tensioning belts.
Defines operating limits for air and water based on temperature and humidity.
Lists critical checks before powering the system, including voltage, wiring, and components.
Details checks for water temperature, pH, flushing, and controls after system flush.
Covers causes for reduced capacity or lack of cooling/heating.
