ClimateMaster TYH/V 024 - 060 60Hz - HFC-410A Manuel d'installation télécharger pdf (Page 48)

ClimateMaster Water-Source Heat Pumps

CLIMATEMASTER WATER-SOURCE HEAT PUMPS

Tranquility

22 (TY) Series

Rev.: 12/17/14

Functional Troubleshooting

Fault Htg Clg Possible Cause Solution

Main power problems

XXGreen 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/DXM'

Check primary/secondary voltage on transformer.

HP Fault

Code 2

High Pressure

X Reduced or no water ﬂ ow in cooling

Check pump operation or valve operation/setting.

Check water ﬂ ow adjust to proper ﬂ ow rate.

X Water Temperature out of range in cooling Bring water temp within design parameters.

X Reduced or no air ﬂ ow in heating

Check for dirty air ﬁ lter and clean or replace.

Check fan motor operation and airﬂ ow 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.

XXOvercharged with refrigerant Check superheat/subcooling vs typical operating condition table.

XXBad HP Switch Check switch continuity and operation. Replace.

LP/LOC Fault

Code 3

Low Pressure / Loss of Charge

XXInsufﬁ cient charge Check for refrigerant leaks

X Compressor pump down at start-up Check charge and start-up water ﬂ ow.

LT1 Fault

Code 4

Water coil low

temperature limit

X Reduced or no water ﬂ ow in heating

Check pump operation or water valve operation/setting.

Plugged strainer or ﬁ lter. Clean or replace..

Check water ﬂ ow adjust to proper ﬂ ow rate.

X Inadequate antifreeze level Check antifreeze density with hydrometer.

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.

XXBad thermistor Check temp and impedance correlation per chart

LT2 Fault

Code 5

Air coil low

temperature limit

X Reduced or no air ﬂ ow in cooling

Check for dirty air ﬁ lter and clean or replace.

Check fan motor operation and airﬂ ow 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.

Improper temperature limit setting (30°F vs

10°F [-1°C vs -12°C])

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

XXBad thermistor Check temp and impedance correlation per chart.

Condensate Fault

Code 6

XXBlocked drain Check for blockage and clean drain.

XXImproper 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.

XXPlugged air ﬁ lter Replace air ﬁ lter.

xXRestricted Return Air Flow Find and eliminate restriction. Increase return duct and/or grille size.

Over/Under

Voltage Code 7

(Auto resetting)

XXUnder 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.

XXOver 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 ﬂ ow or overcharged unit.

Cooling Mode LT1>125°F [52°C] OR LT2<

40ºF [4ºC])

Check for poor water ﬂ ow, or air ﬂ ow.

Swapped Thermistor

Code 9

XXLT1 and LT2 swapped Reverse position of thermistors

ECM Fault - Code 10

Blower does not operate

Check blower line voltage

Check blower low voltage wiring

Blower operating with incorrect airﬂ ow

Wrong unit size selection

Wrong unit family selection

Wrong motor size

Incorrect blower selection

Low Air Coil Pressure Fault

(ClimaDry) Code 11

Reduced or no air ﬂ ow in cooling or ClimaDry

Check for dirty air ﬁ lter and clean or replace

Check fan motor operation and airﬂ ow restrictions

Too high of external static - check static vs blower table

Air temperature out of range Too much cold vent air - bring entering air temp within design parameters

Bad pressure switch Check switch continuity and operation - replace

Low Air Coil Temperature

Fault - (ClimaDry) Code 12

Reduced airﬂ ow in cooling, ClimaDry, or

constant fan

Check for dirty air ﬁ lter and clean or replace

Check fan motor operation and airﬂ ow restrictions

Too high of external static - check static vs blower table

Air temperature out of range Too much cold vent air - bring entering air temp within design parameters

Bad thermistor Check temp and impedance correlation per chart

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ClimateMaster TYH/V 024 - 060 60Hz - HFC-410A Manuel d'installation Page 48

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