ClimateMaster Tranquility TR Series, Installation, Operation & Maintenance Instructions Manual

86

C L I M A T E M A S T E R   W A T E R - S O U R C E   H E A T   P U M P S

Tr a n q u i l i t y

®

  ( T R )   S e r i e s

R e v. :   N o v e m b e r   2 ,   2 0 2 0

C l i m a t e M a s t e r   Wa t e r - S o u r c e   H e a t   P u m p s

Functional Troubleshooting

Fault

Htg Clg Possible Cause

Solution

Main power problems

X

X

Green Status LED Off

Check line voltage circuit breaker and disconnect.
Check for line voltage between L1 and L2 on the contactor.
Check for 24VAC between R and C on CXM/DXM2
Check primary/secondary voltage on transformer.

HP Fault 

Code 2

High Pressure

X

Reduced or no water flow in cooling

Check pump operation or valve operation/setting.
Check water flow adjust to proper flow rate.

X

Water Temperature out of range in cooling

Bring water temp within design parameters.

X

Reduced or no air flow in heating

Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
Dirty Air Coil- construction dust etc.
Too high of external static. Check static vs blower table.

X

Air temperature out of range in heating

Bring return air temp within design parameters.

X

X

Overcharged with refrigerant

Check superheat/subcooling vs typical operating condition table.

X

X

Bad HP Switch

Check switch continuity and operation. Replace.

LP/LOC Fault

Code 3

Low Pressure / Loss of Charge

X

X

Insufficient charge

Check for refrigerant leaks

X

Compressor pump down at start-up

Check charge and start-up water flow.

LT1 Fault

Code 4

Water coil low 

temperature limit

X

Reduced or no water flow in heating

Check pump operation or water valve operation/setting.
Plugged strainer or filter.  Clean or replace..
Check water flow adjust to proper flow rate.

X

Inadequate antifreeze level

Check antifreeze density with hydrometer.

X

Improper temperature limit setting (30°F vs 10°F 

[-1°C vs -2°C])

Clip JW3 jumper for antifreeze (10°F [-12°C]) use.

X

Water Temperature out of range

Bring water temp within design parameters.

X

X

Bad thermistor

Check temp and impedance correlation per chart

LT2 Fault

Code 5

Air coil low

temperature limit

X

Reduced or no air flow in cooling 

Check for dirty air filter and clean or replace.
Check fan motor operation and airflow restrictions.
Too high of external static. Check static vs blower table.

X

Air Temperature out of range

Too much cold vent air? Bring entering air temp within design parameters.

X

Improper temperature limit setting (30°F vs 10°F 

[-1°C vs -12°C])

Normal airside applications will require 30°F [-1°C] only.

X

X

Bad thermistor

Check temp and impedance correlation per chart.

Condensate Fault 

Code 6

X

X

Blocked drain

Check for blockage and clean drain.

X

X

Improper trap

Check trap dimensions and location ahead of vent.

X

Poor drainage

Check for piping slope away from unit.
Check slope of unit toward outlet.
Poor venting. Check vent location.

X

Moisture on sensor

Check for moisture shorting to air coil.

X

X

Plugged air filter

Replace air filter.

x

X

Restricted Return Air Flow

Find and eliminate restriction. Increase return duct and/or grille size.

Over/Under 

Voltage Code 7

(Auto resetting)

X

X

Under Voltage

Check power supply and 24VAC voltage before and during operation.
Check power supply wire size.
Check compressor starting.  Need hard start kit?
Check 24VAC and unit transformer tap for correct power supply voltage.

X

X

Over Voltage

Check power supply voltage and 24VAC before and during operation.
Check 24VAC and unit transformer tap for correct power supply voltage.

Unit Performance Sentinel

Code 8

X

Heating mode LT2>125°F [52°C]

Check for poor air flow or overcharged unit.

X

Cooling Mode LT1>125°F [52°C] OR LT2< 40ºF 

[4ºC])

Check for poor water flow, or air flow.

Swapped Thermistor

Code 9

X

X

LT1 and LT2 swapped

Reverse position of thermistors

No Fault Code Shown

X

X

No compressor operation

See "Only Fan Operates".

X

X

Compressor overload

Check and replace if necessary.

X

X

Control board

Reset power and check operation.

Unit Short Cycles

X

X

Dirty air filter

Check and clean air filter.

X

X

Unit in "test mode"

Reset power or wait 20 minutes for auto exit.

X

X

Unit selection

Unit may be oversized for space. Check sizing for actual load of space.

X

X

Compressor overload

Check and replace if necessary

Only Fan Runs

X

X

Thermostat position

Ensure thermostat set for heating or cooling operation.

X

X

Unit locked out

Check for lockout codes. Reset power.

X

X

Compressor Overload

Check compressor overload. Replace if necessary.

X

X

Thermostat wiring

Check thermostat wiring at heat pump. Jumper Y and R for compressor operation in test mode.

Only Compressor Runs

X

X

Thermostat wiring

Check G wiring at heat pump.  Jumper G and R for fan operation

X

X

Fan motor relay

Jumper G and R for fan operation.  Check for Line voltage across BR contacts.

X

X

Check fan power enable relay operation (if present).

X

X

Fan motor

Check for line voltage at motor. Check capacitor.

X

X

Thermostat wiring

Check thermostat wiring at heat pump. Jumper Y and R for compressor operation in test 

mode

Unit Doesn’t Operate
in Cooling

X

Reversing valve

Set for cooling demand and check 24VAC on RV coil and at CXM/DXM2 board.
If RV is stuck, run high pressure up by reducing water flow and while operating engage and 

disengage RV coil voltage to push valve.

X

Thermostat setup

Check for ‘O’ RV setup not ‘B’.

X

Thermostat wiring

Check O wiring at heat pump. Jumper O and R for RV coil ‘click’.

X

Thermostat wiring

Put thermostat in cooling mode. Check 24 VAC on O (check between C and O); check for 

24 VAC on W (check between W and C). There should be voltage on O, but not on W. If 

voltage is present on W, thermostat may be bad or wired incorrectly.