Crestron CHV-TSTATEX Installationsanleitung PDF herunterladen (Seite 80)

Thermostats Crestron CHV-TSTAT and CHV-THSTAT

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Thermostats: CHV-TSTAT and CHV-THSTAT Operations and Installation Guide – DOC. 8163E

Problem Solving

Troubleshooting

The table below provides corrective action for possible trouble situations. If further

assistance is required, please contact a Crestron customer service representative.

CHV-TSTAT/CHV-THSTAT Troubleshooting

TROUBLE POSSIBLE

CAUSE(S)

CORRECTIVE ACTION

No display No power from

system

Check for +24 V on pins 24(C)

and 24(R)

Check circuit breaker

powering furnace or boiler

Check P4 jumper on

thermostat board

Check thermostat wiring

Incorrect mounting to

backplate

Check thermostat mounting

Heating/Cooling

system not

operating

No power to

thermostat

Check circuit breaker

Check 24 V connection at

thermostat and at furnace/air

conditioner

Check circuit breaker

powering furnace or boiler

Recheck wiring connections

Flashing system

indicator - Short cycle

timer not satisfied

Timer Guards are a safety

feature that prevents rapid

switching between different

cycles;

H1, H2, C1, C2, SB, HM, and

AX flash when the

three-minute timer guards

have not been satisfied

Wait five minutes and/or

consult HVAC contractor

Cannot change

temperature setting

The upper or lower

temperature limits

were reached

Setpoint heat range is

38 – 90º F (3-38º C)

Setpoint cool range is

59-100º F (15 – 38º C)

System cycles too

quickly

Anticipator/Regulation

setting too low

Reprogram

anticipator/regulator setting

Refer to “Thermostat Setup”,

on page 24

High temperature

variance

Anticipator/Regulation

setting too high

(Continued on following page)

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